An unusual "silver" product

Haha, with this "silver" product, I can start typing Chines now!

 I can use 1, 2, 3 and 4 fingers and many tasks can be accomplished. However, I don't think it is ergonomic friendly and I worry that I'll develop carpal tunnel syndrome one day. All the stress lies on the bottom of the wrist, unlike usual mouse, I can rest my whole hand on it. But with this magic trackpad, I always need to lift up my whole hand and sharp angle made at the wrist level. Not good for long term use but handwriting for Chinese.   Should I use a real writing pad??

Bars II