First let me tell you I live 5 min from Universal Orlando and as a season holder me and my wife go to Hogsmeade twice a week. We love it there. Anyway we’re both big into arduino and steam education and just purchased our first interactive wand this evening. I know 2 things. It definitely works via reflective glass bead in the tip and there is now a patent online you can read. Here is the link:
So if any of you want me to try out your wand device at the park just let me know and we can arrange to have you ship it to me to try out at the park. Let me know because I will be working on cracking this technology myself too.