📅 Original date posted:2015-02-22 📝 Original message:Jan, this is great stuff! Thanks for sharing your experiences. I think the 4k payments requests issue must be solvable somehow. I had no trouble transmitting that amount via NFC, although yes a bit of delay was noticable. About payment_url: Protobuf allows changing optional to repeated and yes it's backwards compatible. Which is why I'm personally against parsing two fields rather than just one. > 2) @Andreas: Is the r, r1, r2 mechanism already implemented in Bitcoin Wallet? No it isn't. It's implemented in bitcoinj though.