[webdigi]

The background shouldn't be a problem. One colleague of mine has a petit hand and didn't work reliably. Will be interested to know if it works on a mobile device.

[ColinWright]

Not convenient to test it on such atm. I may get back to it later, but for now, I'm getting back to work.

[webdigi]

Thanks for your support. Anytime you get a chance, please try again. We've made a further update and it should improve accuracy.

[ColinWright]

Nope, still didn't work. Tried both left and right hands, full hand and wrist visible, both normal and blank backgrounds.

Firebox on Ubuntu 14.