OTOH
Currently, the only thing I don't pay regularly by using a smart device, are bus fares, which are a solved problem, my city just hasn't implemented that yet
Everything else, I can either use a digital wallet for, or an instant bank transfer (Which I've been given to understand are a bit more of a hassle in the US)
I'd basically never expect to be without a device for an extended period of time, specially not in an airport
I am aware of the single point of failure though, so I do take particular care of not running out of battery, keeping an accesible spare, and some cash around for emergencies I just never use it
Everything else, I can either use a digital wallet for, or an instant bank transfer (Which I've been given to understand are a bit more of a hassle in the US)
I'd basically never expect to be without a device for an extended period of time, specially not in an airport
I am aware of the single point of failure though, so I do take particular care of not running out of battery, keeping an accesible spare, and some cash around for emergencies I just never use it