I was excited about this device as it's so flat I don't have to worry about breaking one of the big keys when I'm using my laptop I'm often on the go at work. The only problem I have consistently on multiple computers with this device is that when Windows or browser prompts to "touch device", I fiddle with this thing, wiggle it and smack it with my fingernail from different angles got to . and only about 85% of the time does it actually register the touch, the rest of the time I just time out and have to start over. Overall not bad if you don't need to use it all the time (e.g. to protect some online accounts that don't require you to constantly re-authenticate), but for everyday security authentication use I'd probably recommend a different device.
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