So basically they didn't understand what was being signalled? If they did and it would actually take a new "bridge sign landuage" that would be easy to translat

So basically they didn't understand what was being signalled? If they did and it would actually take a new "bridge sign landuage" that would be easy to translate and the device would be easily accessible (cheap and open source), then I guess it would be worth it. Fun fact: In Poland, there are two sign languages used: Polish Sign Language ("Polski Język Migowy", PJM) [1] and Signed Polish (język migany) or System Językowo-Migowy (SJM) [2]. [1]: https://en.wikipedia.org/wiki/Polish_Sign_Language https://en.wikipedia.org/wiki/Polish_Sign_Language [2]: https://en.wikipedia.org/wiki/Signed_Polish https://en.wikipedia.org/wiki/Signed_Polish