I guess it now makes sense why you were looking for a way to modernize it [contactless payment] or rather integrate it into the original design.
Not only ... the country in which I live is far from penny/cents and euro cents, so contactless payments are the only choice.
Hey icopress I had no idea you were a technician/engineer or whatever it is you call people who make such electronics, I love this!
In general, I'm not a computer engineer, I'm just an engineer in the second specialty who was taught to disassemble and assemble an aircraft with my eyes closed, but in general there is not much difference if there is a guide on hand, and you need to understand the wiring and hardware.
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)