[loverofhumanz]

It could be used to scan people's heart rates when they're in a high security line (military check points, airports, embassies) to detect people who are nervous.

I assume some places already use thermal cameras to detect people who are sweating profusely.

Using both together might be a decent way of flagging people who might otherwise slip through security.

Of course there would be many false positives, so it wouldn't be good enough on its own.

[AngryData]

That is the same excuse cops regularly use to violate peoples rights and justify illegal searches and stops or claim they are impaired when they aren't. The very fact that people are being closely watched or monitored is in itself a reason for people to be nervous.

[loverofhumanz]

Yes, some people will be stressed and nervous for benign reasons. Criminals will also be stressed and nervous.

A good security system will use multiple signals to filter out false-positives.

[andrepd]

Yep, that's definitely what we need more of right now, not less.

[loverofhumanz]

What's the objection? I don't see how having my heart rate scanned at an airport or military checkpoint in any way impinges on my freedom or happiness.

[lima]

Dubious utility aside, this is a solved problem using mmWave.

Google even ships it in some Nest displays for sleep tracking...

[loverofhumanz]

Wifi seems much more capable and harder to defeat? A heavy coat could defeat mmWave, I believe.