I do have a PayPal Security Key. My calliper measures 0.81mm, compared to 0.78mm... | Hacker News

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		cgjaro on Oct 9, 2014 \| parent \| context \| favorite \| on: Plastc Card I do have a PayPal Security Key. My calliper measures 0.81mm, compared to 0.78mm for credit cards. So it is indeed pretty much the same thickness.

bravo22 on Oct 9, 2014 [–]

Thanks.

I looked at more teardown pics. It is definitely a segmented display which is far easier to drive than an active matrix (i.e. "pixels"). They also don't have wireless and a host of other things that this device proclaims to have.

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