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Re: Barcodes (Was: Keyboards again)

From Bob Eager <news0073@eager.cx>
Newsgroups alt.folklore.computers
Subject Re: Barcodes (Was: Keyboards again)
Date 2020-10-04 09:02 +0000
Message-ID <htthd2FtmmrU6@mid.individual.net> (permalink)
References (8 earlier) <slrnrlpflj.8gf.maus@dmaus.org> <jfi.5F78E5C5.42.fortytwo@xs4all.nl> <20201003221147.f7380a7ae515d04c9d05b016@eircom.net> <htsak1FtmmrU3@mid.individual.net> <g12inf5i6rlgqk7faej66eivi5pluhoh6s@4ax.com>

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On Sat, 03 Oct 2020 19:26:31 -0400, J. Clarke wrote:

> On 3 Oct 2020 22:00:33 GMT, Bob Eager <news0073@eager.cx> wrote:
> 
>>On Sat, 03 Oct 2020 22:11:47 +0100, Ahem A Rivet's Shot wrote:
>>
>>> On Sat, 03 Oct 2020 21:57:41 MET Jan van den Broek
>>> <fortytwo@xs4all.nl>
>>> wrote:
>>> 
>>>> 12 Sep 2020 12:27:31 GMT maus <maus@dmaus.org> schrieb:
>>>> 
>>>> [Schnipp]
>>>> 
>>>> >Bar code readers are fascinating devices. I had one, but it has
>>>> >disappeared somewhere while I was in hospital, bar codes contain
>>>> >data like recommended prices (different from what is on the
>>>> >supermarket packet), and so on.
>>>> 
>>>> Most of the time, barcodes just contain just an identifier, not all
>>>> the data.
>>> 
>>> 	There's not room for much data in a barcode, even the square QR
>>> codes only hold 64 bytes IIRC.
>>
>>For QR codes, actually up to 7000 digits or 4000 characters. Look at the
>>NHS QP code app, and how big those are. They are signed, too.
>>
>>(source: pkg install libqrencode; man qrencode)
> 
> A QR code is not what is usually thought of as a "bar code" and I have
> never seen one used to scan produce in a store.  Further, why would it
> contain price information?  The seller may charge one price today and a
> different price tomorrow.

I wasn't disagreeing with that. I was saying that the statement "even the 
square QR codes only hold 64 bytes IIRC" was not correct.





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Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-07 19:51 -0400
  Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-07 21:03 -0400
    Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-07 18:16 -0700
      Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-07 21:50 -0400
    Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-07 22:12 -0400
      Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-07 23:51 -0400
        Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-12 17:40 -0400
          Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-12 18:04 -0400
      Re: Keyboards again drb@ihatespam.msu.edu (Dennis Boone) - 2020-09-08 13:19 -0500
        Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-08 14:48 -0400
          Re: Keyboards again Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-09-08 21:26 +0000
            Re: Keyboards again Peter Flass <peter_flass@yahoo.com> - 2020-09-08 14:48 -0700
            Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-08 17:52 -0400
              Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-09 00:51 +0100
              Re: Keyboards again scott@slp53.sl.home (Scott Lurndal) - 2020-09-09 17:42 +0000
                Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-09 19:50 +0100
                Re: Keyboards again scott@slp53.sl.home (Scott Lurndal) - 2020-09-09 19:49 +0000
                Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-09 21:18 +0100
                Re: Keyboards again scott@slp53.sl.home (Scott Lurndal) - 2020-09-10 15:44 +0000
            Re: Keyboards again Freddy1X <freddy1X@indyX.netX> - 2020-09-08 21:59 -0400
              Re: Keyboards again gareth evans <headstone255@yahoo.com> - 2020-09-09 11:10 +0100
              Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-09 15:27 -0700
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-10 17:47 -0400
                Re: Keyboards again Dave Garland <dave.garland@wizinfo.com> - 2020-09-11 01:26 -0500
                Re: Keyboards again Thomas Koenig <tkoenig@netcologne.de> - 2020-09-12 06:20 +0000
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-12 12:27 +0000
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-12 13:07 +0000
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-12 20:15 -0400
                Barcodes (Was: Keyboards again) Jan van den Broek <fortytwo@xs4all.nl> - 2020-10-03 21:57 +0100
                Re: Barcodes (Was: Keyboards again) Ahem A Rivet's Shot <steveo@eircom.net> - 2020-10-03 22:11 +0100
                Re: Barcodes (Was: Keyboards again) Bob Eager <news0073@eager.cx> - 2020-10-03 22:00 +0000
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-03 19:26 -0400
                Re: Barcodes (Was: Keyboards again) Bob Eager <news0073@eager.cx> - 2020-10-04 09:02 +0000
                Re: Barcodes (Was: Keyboards again) Ahem A Rivet's Shot <steveo@eircom.net> - 2020-10-04 12:22 +0100
                Re: Barcodes (Was: Keyboards again) Bob Eager <news0073@eager.cx> - 2020-10-04 16:42 +0000
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 22:39 +0100
                Re: Barcodes (Was: Keyboards again) Bob Eager <news0073@eager.cx> - 2020-10-04 22:06 +0000
                Re: Barcodes (Was: Keyboards again) Andy Burns <usenet@andyburns.uk> - 2020-10-04 08:30 +0100
                Re: Barcodes (Was: Keyboards again) the "Swampster" <fortytwo@xs4all.nl> - 2020-10-06 12:13 +0000
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 14:30 +0100
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-04 10:06 -0400
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-04 11:17 -0400
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 22:30 +0100
                Re: Barcodes (Was: Keyboards again) John Levine <johnl@taugh.com> - 2020-10-04 19:13 +0000
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-04 19:07 -0400
                Re: Barcodes (Was: Keyboards again) John Levine <johnl@taugh.com> - 2020-10-05 01:23 +0000
                Re: Barcodes (Was: Keyboards again) Andy Burns <usenet@andyburns.uk> - 2020-10-05 09:54 +0100
                Re: Barcodes (Was: Keyboards again) Peter Flass <peter_flass@yahoo.com> - 2020-10-05 05:34 -0700
                Re: Barcodes (Was: Keyboards again) Andy Burns <usenet@andyburns.uk> - 2020-10-05 13:47 +0100
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-05 11:22 -0400
                Re: Barcodes (Was: Keyboards again) Quadibloc <jsavard@ecn.ab.ca> - 2020-10-05 11:03 -0700
                Re: Barcodes (Was: Keyboards again) Peter Flass <peter_flass@yahoo.com> - 2020-10-05 11:10 -0700
                Re: Barcodes (Was: Keyboards again) Niklas Karlsson <anksil@yahoo.se> - 2020-10-05 18:27 +0000
                Re: Barcodes (Was: Keyboards again) Ahem A Rivet's Shot <steveo@eircom.net> - 2020-10-05 20:03 +0100
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-05 18:20 -0400
                Re: Barcodes Dan Espen <dan1espen@gmail.com> - 2020-10-05 19:05 -0400
                Re: Barcodes J. Clarke <jclarke.873638@gmail.com> - 2020-10-05 23:57 -0400
                Re: Barcodes scott@slp53.sl.home (Scott Lurndal) - 2020-10-06 15:30 +0000
                Re: Barcodes (Was: Keyboards again) Peter Flass <peter_flass@yahoo.com> - 2020-10-05 16:52 -0700
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-05 23:54 -0400
                Re: Barcodes (Was: Keyboards again) Quadibloc <jsavard@ecn.ab.ca> - 2020-10-05 21:53 -0700
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-06 07:33 -0400
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-05 11:21 -0400
                Re: Barcodes (Was: Keyboards again) Dave Garland <dave.garland@wizinfo.com> - 2020-10-04 22:38 -0500
                Re: Barcodes (Was: Keyboards again) Quadibloc <jsavard@ecn.ab.ca> - 2020-10-04 21:19 -0700
                Re: Barcodes (Was: Keyboards again) Andy Leighton <andyl@azaal.plus.com> - 2020-10-05 03:04 -0500
                Re: Barcodes (Was: Keyboards again) Ahem A Rivet's Shot <steveo@eircom.net> - 2020-10-05 11:01 +0100
                Re: Barcodes (Was: Keyboards again) gareth evans <headstone255@yahoo.com> - 2020-10-05 12:50 +0100
                Re: Barcodes (Was: Keyboards again) Peter Flass <peter_flass@yahoo.com> - 2020-10-05 05:34 -0700
                Re: Barcodes (Was: Keyboards again) Dave Garland <dave.garland@wizinfo.com> - 2020-10-05 10:06 -0500
                Re: Barcodes (Was: Keyboards again) maus <maus@dmaus.org> - 2020-10-06 21:16 +0000
                Re: Barcodes (Was: Keyboards again) Ahem A Rivet's Shot <steveo@eircom.net> - 2020-10-07 06:38 +0100
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-05 12:36 +0100
                Re: Barcodes (Was: Keyboards again) Andy Burns <usenet@andyburns.uk> - 2020-10-05 08:00 +0100
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 22:28 +0100
                Re: Barcodes (Was: Keyboards again) J. Clarke <jclarke.873638@gmail.com> - 2020-10-04 19:06 -0400
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-05 12:33 +0100
                Re: Barcodes (Was: Keyboards again) Andy Burns <usenet@andyburns.uk> - 2020-10-05 08:24 +0100
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-12 20:02 -0400
                Re: Keyboards again Thomas Koenig <tkoenig@netcologne.de> - 2020-09-13 07:05 +0000
                Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-13 09:24 +0100
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-13 09:38 +0000
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-13 19:20 -0400
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-13 23:54 +0000
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-15 18:47 +0000
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-15 18:35 -0400
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-15 18:44 +0000
                Re: Keyboards again gareth evans <headstone255@yahoo.com> - 2020-09-15 20:29 +0100
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-15 21:21 +0000
                Re: Keyboards again Peter Flass <peter_flass@yahoo.com> - 2020-09-15 18:49 -0700
                Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-16 07:56 +0100
                Re: Keyboards again gareth evans <headstone255@yahoo.com> - 2020-09-16 10:16 +0100
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-16 09:55 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-16 11:25 -0500
                Re: Keyboards again Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-09-16 17:42 +0000
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-16 18:03 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-16 13:57 -0500
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-16 19:08 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-16 16:48 -0500
                Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-17 06:55 +0100
                Re: Keyboards again usenet@only.tnx (Questor) - 2020-09-16 21:03 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-16 16:53 -0500
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-16 21:55 +0000
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-17 07:20 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-17 10:06 -0500
                Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-17 11:15 -0400
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-17 12:37 -0500
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-17 20:07 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-18 10:01 -0500
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-18 16:45 +0000
                Re: Keyboards again Peter Flass <peter_flass@yahoo.com> - 2020-09-18 11:22 -0700
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-17 19:59 +0000
                Re: Keyboards again usenet@only.tnx (Questor) - 2020-09-19 23:25 +0000
                Re: Keyboards again Chris <xxx.syseng.yyy@gfsys.co.uk> - 2020-09-20 12:03 +0100
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-20 14:27 +0000
                Re: Keyboards again Chris <xxx.syseng.yyy@gfsys.co.uk> - 2020-09-20 16:08 +0100
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-20 10:52 -0500
                Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-20 14:57 -0400
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-21 09:09 +0000
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-21 09:07 +0000
                Re: Keyboards again Chris <xxx.syseng.yyy@gfsys.co.uk> - 2020-09-21 14:32 +0100
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-21 13:37 +0000
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-22 12:45 +0000
                Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-22 12:49 +0000
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-22 12:37 +0000
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-22 13:38 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-22 09:31 -0500
                Re: Keyboards again Peter Flass <peter_flass@yahoo.com> - 2020-09-22 15:39 -0700
                Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-22 20:55 -0400
                Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-22 19:39 -0700
                Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-23 00:13 -0400
                Re: Keyboards again maus <maus@dmaus.org> - 2020-09-23 10:52 +0000
                Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-20 14:48 -0400
                Re: Keyboards again usenet@only.tnx (Questor) - 2020-09-21 19:35 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-22 09:22 -0500
                Re: Keyboards again scott@slp53.sl.home (Scott Lurndal) - 2020-09-13 15:34 +0000
                Re: Keyboards again Mike Spencer <mds@bogus.nodomain.nowhere> - 2020-09-13 17:54 -0300
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-13 10:53 -0500
                Re: the dangers of socialism, not Keyboards again John Levine <johnl@taugh.com> - 2020-09-13 17:50 +0000
                Re: the dangers of socialism, not Keyboards again Andy Burns <usenet@andyburns.uk> - 2020-09-13 19:35 +0100
                Re: the dangers of socialism, not Keyboards again John Levine <johnl@taugh.com> - 2020-09-13 19:33 +0000
                Re: the dangers of socialism, not Keyboards again Bob Martin <bob.martin@excite.com> - 2020-09-14 06:02 +0000
                Re: the dangers of socialism, not Keyboards again Andy Burns <usenet@andyburns.uk> - 2020-09-14 07:46 +0100
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-13 15:01 -0500
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-13 19:25 -0400
                Re: Keyboards again Bob Eager <news0073@eager.cx> - 2020-09-13 09:37 +0000
                Barcodes (Was: Keyboards again) Jan van den Broek <fortytwo@xs4all.nl> - 2020-10-03 22:00 +0100
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 14:38 +0100
                Re: Barcodes (Was: Keyboards again) mjb@signal11.invalid (Mike) - 2020-10-04 22:36 +0100
              Re: Keyboards again Andy Burns <usenet@andyburns.uk> - 2020-09-10 10:39 +0100
            Re: Keyboards again Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-09-09 06:02 +0000
            Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-09 14:14 +0000
              Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-09 10:18 -0400
            Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-09 14:49 -0500
            Re: Keyboards again mjb@signal11.invalid (Mike) - 2020-09-09 20:36 +0100
            Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-09 18:51 -0400
              Re: Keyboards again Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-09-10 16:24 +0000
                Re: Keyboards again JimP <chucktheouch@gmail.com> - 2020-09-10 14:58 -0500
              Re: Keyboards again Ahem A Rivet's Shot <steveo@eircom.net> - 2020-09-10 17:12 +0100
                Re: Keyboards again Andreas Kohlbach <ank@spamfence.net> - 2020-09-10 17:49 -0400
  Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-07 18:09 -0700
    Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-07 18:14 -0700
    Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-07 22:19 -0400
      Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-07 20:14 -0700
        Re: Keyboards again Quadibloc <jsavard@ecn.ab.ca> - 2020-09-07 20:32 -0700
      Re: Keyboards again Niklas Karlsson <anksil@yahoo.se> - 2020-09-08 09:44 +0000
    Re: Keyboards again Andy Burns <usenet@andyburns.uk> - 2020-09-08 10:49 +0100
      Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-08 07:17 -0400
      Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-08 08:02 -0400
        Re: Keyboards again J. Clarke <jclarke.873638@gmail.com> - 2020-09-08 18:33 -0400
          Re: Keyboards again Dan Espen <dan1espen@gmail.com> - 2020-09-08 19:59 -0400

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