Back in the day, an infrared camera was very bulky and expensive. Today, you can buy a relatively cheap infrared camera to attach to your smartphone. Techy Mark Rober explains that though cheap technology is a good thing, there will always be people who use it for evil.
Using the infrared camera on a smartphone, one could easily figure out what someone’s ATM code is. Thankfully, Mark also explains the simple way to defend from this intrusion.