I got this as soon as it came on the market, at first it was very good with my iphone 5, it worked very well with my iphone 5, but then I upgraded to iphone 6, is still works but seems to be more delay with the iphone 6 until the new firmware update.
So far I'm used to the few second respond already, great product!
The lock is very sensitive, just a bump will activate the lock, even with a layer of clothing, so be careful.