Do you remember the old Project Walrus?
I spent some tokens on it to become available on a modern Android phone again.
Its kind of special since it implements pm3 command direct with the device. It doesn’t use the client.
Have a look at it and improve it!
Walrus is an Android app for contactless card cloning devices such as the Proxmark3 and Chameleon Mini. Using a simple interface in the style of Google Pay, access control cards can be read into a wallet to be written or emulated later.
Designed for physical security assessors during red team engagements, Walrus supports basic tasks such as card reading, writing and emulation, as well as device-specific functionality such as antenna tuning and device configuration. More advanced functionality such as location tagging makes handling multiple targets easy, while bulk reading allows the stealthy capture of multiple cards while “war-walking” a target.
Nice to see Walrus alive again - the wallet-style card list was the part I always missed, and talking pm3 commands straight to the device instead of via a client is a real practical win when you’re standing in front of a reader with one hand free. Two things that would make it more useful for implant folks: a per-card note field for which coupler/orientation actually read reliably, and an export so the wallet survives a phone change. On Amal’s proxmark3.app comparison, I read them as complementary rather than competing - a browser-based tool is great for a workstation session, whereas an offline Android app is what you want in a building with no wifi. If it can flag when a scan looks like a partial read rather than silently saving it, that alone would cut a lot of confused “why won’t it emulate” posts. Which Android versions are you targeting, and does it need USB-OTG or does it go over BT for the Chameleon?