[otachack]

QR codes are amazing and yet untapped, in my opinion. They're like barcodes but:

- amount of data can vary from small to large - error correction

They don't have to just hold URLs and can contain raw information that custom programs can read. I love their use in it for virtual currencies as public/private addresses b/c it simplifies them for users. Venmo also picked it up not too long ago to easily pay/request to people you may not have friended which is useful for street vendors.

Someone posted an example here about contact tracing and how it just leads to a web form to fill details in. Ideally, if we had our shit together, there can be some standard contact tracing format for QR and use programs to scan the data in to auto fill and submit your details to.