The sort of thing that bigger delivery companies use where you scribble on a screen? I’m guessing it’s quite expensive but have no idea.

Why not use a tablet? There’s bound to be software for what you want combined with a stylus

Well this is the thing……. I’m actually putting together a system that works on iOS devices and was wondering roughly how much money this is going to save compared to existing systems.

It’s working really well already and can be rolled out on a very small scale if need be so it opens the technology up to companies that previously couldn’t afford it.