Pull any bill out of your wallet. See the dark green numbers on the top-left and top-right corners? Those are serial numbers, and some are more rare than others. If you happen to have paper money with ...
Most people slide $20 bills into an ATM without a second glance, but a tiny symbol on the serial number can quietly turn an ordinary note into a collectible. That small star can mean a bill was ...
Your Android phone’s serial number is a unique identifier that can be used to track your phone if it is lost or stolen. It can also be used to register your phone with your carrier or manufacturer, to ...