People are naive if they think a camera on-site is a big deal. Once you head to Europe, even in the UK, security cameras are everywhere. And it is a good thing if you aren't doing anything wrong. Couple that with all the pings between your cell phone and zillions of cell towers, location driven apps, credit card use, etc, say good bye to "stealth". Most of this is benign unless you are a criminal.
But if you have also been using wechat or tiktok etc, guess what, just about every action in your life is being tracked and archived. What purpose? No reason at this moment. But all data can be sold to parties who find a purpose. And if traveling in China or other nations where China technologies are being implemented then advanced facial recognition is already in full effect. All your innocent social media presence.. Linked In, Facebook, Company website people profiles etc etc, photos are already catalogued and providing sufficient background. Not surprising that products from companies like Nvidia are in high demand
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