Usertesting from a distance… with old hardware

A large group of our clients uses old hardware to buy our products online. They like our webshop and want to help improve their experience. So when we want to do usertesting we try to visit them, it's fun and very usefull.

But now with COVID and everything we aren't allowed to visit, but we want to continue testing. Using tools like Lookback has been an issue since their hardware doesn't have webcam or the proper browser (version).

Do you have any advice when it comes to (online) tooling or practices with usertesting from a distance?