Answers.Body: <p>It contains a single number: 42. At least on all the civicrm installation that have a "DON'T PANIC" on the cover</p>
  
  <p>On the others it's contact id + participant id + url to the participant view in your civicrm</p>
  
  <p>There is a hook to alter what's encoded in the QRcode alterBarcode that you can implement from an extension and put something else (eg the name of the participant in clear)</p>
  
  <p>Beware that there is a limit of how much text that you can put in a QR. Last time I checked, the proper way of formatting the content (eg. vcard if you want to put the contact details) so it was understood by all smartphones was a bit of a hit and miss.</p>
  
  <p>Would be great you update us on the state of the art and what works or doesn't</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-05-08T07:30:24.547Z
Answers.LastActivityDate: 2015-05-08T07:36:18.093Z
Answers.LastEditDate: 2015-05-08T07:36:18.093Z
Answers.UserDisplayName: Xavier
Body: <p>What is the default data encoded in the Bar Code / QR Code?</p>
  
  <p>Is it possible to modify this data to use for event check in? i.e. on quick scan event participant status changes from registered to attended.</p>
  
Tags: <civievent>
Title: What is the default data encoded in the Bar Code / QR Code?
ThreadText: # What is the default data encoded in the Bar Code / QR Code?
  
  (Asked by: username_0 on 2015-05-07)
  
  What is the default data encoded in the Bar Code / QR Code?
  
  Is it possible to modify this data to use for event check in? i.e. on quick scan event participant status changes from registered to attended.
  
  **Tags:** civievent
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-05-08. Score: 2
  
  It contains a single number: 42. At least on all the civicrm installation that have a "DON'T PANIC" on the cover
  
  On the others it's contact id + participant id + url to the participant view in your civicrm
  
  There is a hook to alter what's encoded in the QRcode alterBarcode that you can implement from an extension and put something else (eg the name of the participant in clear)
  
  Beware that there is a limit of how much text that you can put in a QR. Last time I checked, the proper way of formatting the content (eg. vcard if you want to put the contact details) so it was understood by all smartphones was a bit of a hit and miss.
  
  Would be great you update us on the state of the art and what works or doesn't
  
  
  ---
  
  