Tap. Beep. Done.
Bitcoin's first tap to pay solution is here.
Free and open source.
Privacy by default.
Meet Numo.
https://blossom.primal.net/03caf92783e9fbe5517f3648c4595cf83cec5187291477cb9086d...
Just an FYI There is an Apple app called numo pay… and it has nothing to do with btc.