moin moin,
https://twitter.com/cczona/status/687654996112990208
That came up in the SeaGL channel.
As was pointed out, schedule changes happen and updates would be difficult. SCaLE has been great about not having changes, so that's less of an issue :).
However, for me, as a speaker, the main reason I want info on my badge is for others who want to go to my talks, so I would actually prefer a QR code with a link to either my talk page or my speaker page, which would then have easy to use links for calendar entry and/or guidebook entry.
I actually meant to do that on my own last year :), but didn't get to it :(.
ciao,
der.hans