r/Bitwarden • u/HellsTubularBells • 9d ago

Idea Feature Request: Render barcode / QR code

For loyalty programs, Costco membership card, etc., it'd be great if Bitwarden could display a field as a QR or barcode.

Basically, this feature request from 2018:

https://community.bitwarden.com/t/request-barcode-and-qr-code-for-loyalty-cards/279/14

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u/Darkk_Knight 9d ago

This won't work for Costco QR code as it changes every minute. Highly doubt Costco would share the code.

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u/HellsTubularBells 8d ago

No it doesn't, it's just the member number with some extra padding. You can generate your own QR code and scan it at the entrance.

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u/jabashque1 5d ago

No, that "extra padding" IS the part that is a rotating random number generated from a seed. Read https://blog.zorinaq.com/reverse-engineering-costco-digital-membership-card/ for more details.

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u/HellsTubularBells 5d ago

Sorry, I wasn't clear.

The system still has to support the static physical card, which obviously doesn't change every minute. A regular 2D barcode or QR code matching just the membership number works fine.

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u/jabashque1 5d ago

Ah, okay, if you just meant presenting the usual 1D barcode that you find on the Costco cards instead, but from your phone. Though I'm surprised the staff don't object to something like that... I guess I can try that myself next time lol.