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 ...

Although most of your paper money won’t be worth more than what it says, there’s a chance it might — even if it’s not decades old — based on the serial number. To find the value, or find out if your ...

It is time to break out the billfold because you might just have a $1 bill that is worth much more than a dollar. It is not unusual for money to be worth more than face value. We have previously ...

There are various reasons you might want to find your laptop or computer’s serial number. Some schools ask that you register your laptop for academic use. Workplaces often do the same thing. You may ...

Apple will soon be changing the way serial numbers of Macs and MacBooks are created, with a switch to randomized numbers in early 2021 making it harder to suss out details about a device. Currently, ...

Topher, an avid Mac user for the past 15 years, has been a contributing author to MacFixIt since the spring of 2008. One of his passions is troubleshooting Mac problems and making the best use of Macs ...

Some businesses require serial numbers for all USB devices attached to their network. The Window Device Manager console displays a list of all your USB peripherals and provides you with detailed ...

Welcome to Further Details, a recurring column where we investigate what purpose an oft-overlooked product element actually serves. This week: why people hide their watches’ serial numbers. Wait, ...