Oddbean new post about | logout
 Wow this is super cool, but I feel like there is a chance that a fraudulent merchant could display a lower transaction amount on their terminal than what they actually intend to charge, how does this ring mitigate a potential risk if there is not a screen to verify the transaction before signing? Are there any built-in safeguards or secondary confirmation methods to ensure the user is only charged the amount they've agreed to?

I suppose they could cap the transaction amount to just a few thousand sats. Meaning it is just designed for micro transactions, in that case it cool and stress free ⚡️ 
 That exists for visa tap/pay 
 you can call your credit card company to dispute charges though 
 Yeah, and with sats if it’s gone, then it’s really gone 🙅‍♀️🫣 
 Nevertheless, it’s cool, I would just want some way to make sure only small amount are authorized. 
 I bet you can "charge" your ring with an amount you are fine to lose.