Imagine this in the future. A device will be able to scan you as a person to see if you can afford to go inside a building and then you’ll be put or only allowed into certain places. Along with one day (I’m hoping) the system will completely crash and your bank account closes overnight leaving you with not having the opportunity to buy anything.
I work in the festival industry and sometimes the signal is poor and you cannot take card payment. Some parents couldn’t buy food or a treat for their children….thankfully those which experienced this always carries cash now.