4 ms·

Perhaps the amount of data?

Leynos 14y ago
For reference, here's a QR code with a three line postal address, email address and mobile number: http://www.moongate.ro/products/qr_code-vcard/serve_card?c=KeWm77 http://www.moongate.ro/products/qr_code-vcard/serve_card?c=K... Not beyond the realms of what could be placed on a business card, a lot cheaper to make and certainly more useful for most phone users. On the other hand, the NFC card is a lot more attractive looking and has an extra "wow" factor. Of course, it would be useless to me as my phone doesn't have NFC, so I would be left keying the contact details into my phone by hand.
- jimktrains2 14y ago
  Now add in PGP key sigs (or the entire public key), website, SSL key sigs, bitcoin address, and other information I haven't thought of yet, oh, and wrap all of that inside a VCARD, it becomes quite large quite quickly. I'm not saying for the basic info a VCARD QR Code won't work, but for more info it breaks down.
  - estel 14y ago
    Wikipedia has some more information on it, but for realistically printable QR codes (version 10), you can probably store about a hundred bytes. Alternatively you could use Video QR: http://stephendnicholas.com/archives/310 http://stephendnicholas.com/archives/310 ;)
angry-hacker 14y ago
You can easily contain all the data needed of a vcard to qr-code... except picture of course - http://yeblon.com/vcard-on-business-card-with-qr-code http://yeblon.com/vcard-on-business-card-with-qr-code
- jimktrains2 14y ago
  Now add in PGP key sigs (or the entire public key), website, SSL key sigs, bitcoin address, and other information I haven't thought of yet, oh, and wrap all of that inside a VCARD, it becomes quite large quite quickly. I'm not saying for the basic info a VCARD QR Code won't work, but for more info it breaks down.
- klinquist 14y ago
  My NFC tag is simply a link to my vcard.... Well, a php file that looks like this: <?php header('Content-disposition: attachment; filename=klinquist.vcf'); header('Content-type: text/x-vcard'); readfile('klinquist.vcf'); ?>

For reference, here's a QR code with a three line postal address, email address and mobile number: http://www.moongate.ro/products/qr_code-vcard/serve_card?c=KeWm77 http://www.moongate.ro/products/qr_code-vcard/serve_card?c=K... Not beyond the realms of what could be placed on a business card, a lot cheaper to make and certainly more useful for most phone users. On the other hand, the NFC card is a lot more attractive looking and has an extra "wow" factor. Of course, it would be useless to me as my phone doesn't have NFC, so I would be left keying the contact details into my phone by hand.

jimktrains2 14y ago
Now add in PGP key sigs (or the entire public key), website, SSL key sigs, bitcoin address, and other information I haven't thought of yet, oh, and wrap all of that inside a VCARD, it becomes quite large quite quickly. I'm not saying for the basic info a VCARD QR Code won't work, but for more info it breaks down.
- estel 14y ago
  Wikipedia has some more information on it, but for realistically printable QR codes (version 10), you can probably store about a hundred bytes. Alternatively you could use Video QR: http://stephendnicholas.com/archives/310 http://stephendnicholas.com/archives/310 ;)

angry-hacker 14y ago

You can easily contain all the data needed of a vcard to qr-code... except picture of course - http://yeblon.com/vcard-on-business-card-with-qr-code http://yeblon.com/vcard-on-business-card-with-qr-code

jimktrains2 14y ago
Now add in PGP key sigs (or the entire public key), website, SSL key sigs, bitcoin address, and other information I haven't thought of yet, oh, and wrap all of that inside a VCARD, it becomes quite large quite quickly. I'm not saying for the basic info a VCARD QR Code won't work, but for more info it breaks down.
klinquist 14y ago
My NFC tag is simply a link to my vcard.... Well, a php file that looks like this: <?php header('Content-disposition: attachment; filename=klinquist.vcf'); header('Content-type: text/x-vcard'); readfile('klinquist.vcf'); ?>