It will likely work for Walmart because as of 2021 the Walmart app had 120 million active monthly users [1]. That's almost half of the US adult population.
For all of those people, using the chargers won't require downloading some new clunky app that they only have because of EV charging.
It will be that an app they already have and use regularly and already have their payment information adds EV charging to the list of Walmart goods and services that they already use it for.
Teslas do not need any app for charging. I mean sure, they do have an app, but no need to even have the app on the phone or with you to charge. No need for a phone or a credit card or a code or a password or a chip or a retina scan or interacting with a screen or tapping a keypad or anything. Just plug the plug into the car at the supercharger and it charges. Or, do it at home, cheaper.
For all of those people, using the chargers won't require downloading some new clunky app that they only have because of EV charging.
It will be that an app they already have and use regularly and already have their payment information adds EV charging to the list of Walmart goods and services that they already use it for.
[1] https://www.appsrhino.com/blogs/walmart-grocery-delivery-app...