5 Cool Credit Card-Shaped Gadgets That Can Fit in Your Wallet

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Consumer gadgets have become so integrated into our daily routines that even when you’re not at home, you need to carry them with you. Without them, it can become particularly inconvenient to perform even the most basic tasks. There are gadgets to help you remember where you parked your car or keep track of your to-do list. But carrying these essential gadgets with you everywhere is usually difficult due to their size and weight. Sure, you can now find sleek, minimalist gadgets that can fit in your pocket, but what if you want to go even smaller? There are actually a multitude of technologies as small as a credit card.

You can easily hold these devices in the palm of your hand and store them safely in your wallet. They are specially designed to be used on the go, so they are also lightweight. If you’re looking for credit card-sized gadgets, here are five devices you can order online.

You never know when you need to transfer files on the go, so it’s a good idea to carry an external storage drive. Portable SSDs are usually the go-to option, but they’re too bulky to fit just in your wallet. You can opt for SD cards, but that usually means having to bring a separate USB adapter with you. As an alternative, check out the Bilious USB Flash Drive instead, available for $22.

It is a USB key that is in the shape of a credit card. The entire device measures 3.42 inches by 2.16 inches and is just 0.09 inches thick. Just like a credit card, you can slip it into your wallet without any problem. The Bilious USB flash drive has a capacity of 64 GB, capable of storing 336 minutes of 1080p videos, over 53,000 12 MP photos or almost 21,000 songs. If you need other capacities, it’s also available in a 256GB unit.

To stay true to its credit card form, the USB flash drive uses a collapsible USB connector that folds inward, so it doesn’t stick out when not in use. Although it is slim, the device is still designed to be waterproof, shockproof, X-ray resistant and temperature resistant. It should work with Windows, Linux and macOS devices at a maximum transfer speed of 480 Mbps, thanks to its USB 2.0 interface. Feel free to plug the USB drive into TVs, audio devices, or even your car.

If you’ve lost your wallet more times than you can count, you’ve probably thought about putting a tracker on it. However, classic trackers like Apple AirTag and Tile Tracker are often too bulky for a wallet. Instead, you need a thinner model like the Ugreen FineTrack Slim Wallet Tracking Card, measuring just 0.07 inches thick. This wallet tracking card is Apple MFi certified, meaning it is an Apple-approved accessory and works with Apple products, including iPhones and iPads running at least iOS/iPadOS 14.5 and Mac computers updated to at least macOS 12.5. However, you cannot pair it with Android phones.

It’ll appear in Apple’s Find My app, where you’ll also get the usual Find My features like left-behind notifications, sharing items with up to five people, and map navigation if you lose an item. To locate the map, open Find my and go to Instructions to see the map. If you’re within a Bluetooth range of 33 to 66 feet, you can also use Find My to make it beep. It emits a 75-80 dB alarm, loud enough to be heard at close range.

The Ugreen FineTrack Slim Wallet Tracking Card is rechargeable, but it can last up to a year on a single charge. If your wallet is too full to insert another card, there’s a built-in hole for a lanyard, so you can convert it to a bag tag instead. Don’t worry about exposing it to the elements since it’s IP68 rated, meaning it’s completely dust-proof and can even be submerged in water.

No matter how portable handheld gaming consoles are, they still take up a lot of space in your bag. It makes you wish there was a handheld you could put in your wallet instead. There is one, called Arduboy FX-C. First introduced as a Kickstarter project over a decade ago, the Arduboy FX-C is probably the lightest way to play games on the go. It’s only the size of a credit card, thanks to its ultra-thin circuit board, measuring 0.2 inches thick.

Although tiny, the Arduboy FX-C is still a fairly capable handheld computer. It is an 8-bit gaming system based on Arduino and running on the same processor as the Arduino Micro and Leonardo boards. It comes with six touch buttons and a 128×64 1-bit black and white OLED display, all finished off with a retro look. It is also designed to be durable. The front material is polycarbonate, while the rear is stamped aluminum.

Right out of the box, you can start playing any of the 300 games included on the Arduboy. These aren’t the AAA titles you’ll find on modern handhelds, however. Instead, they are created by open source developers. You can also code your own 8-bit game using the Arduboy, if you’re not a fan of any of the preloaded games. You’ll find handy tutorials on how to do this in the Arduboy community. In terms of power, the Arduboy works with a rechargeable Li-Po battery with a capacity of 180 mAh. It can last at least eight hours, and once it needs recharging, simply plug it into any USB-C charger.

Modern smartphones may come with bigger and better batteries, but there are still times when you need to charge your device when you’re away from a wall outlet. Unfortunately, most power banks are difficult to transport because they are quite heavy. If you prefer an easier way to charge your phone on the go, consider the Clutch Pro Portable Charger, one of Amazon’s cheapest power banks.

This is a 5000mAh power bank, enough to fully charge your phone once. Unlike other 5000mAh power banks, Clutch Pro is slimmer. It’s slightly larger than a credit card, measuring 3.86 x 2.65 inches and 0.32 inches thick. It’s also lighter, weighing just 3.7 ounces. The power bank is still compact enough to carry in your wallet if you don’t mind a little thickness, but feel free to throw it in your pocket or bag as well.

In terms of charging speed, Clutch Pro can charge an iPhone 16 from empty to full in around 1.5 hours. The power bank itself, on the other hand, needs around two hours to fully charge. You can check its charge level by looking at the light indicators on the front. For added convenience, a USB-C cable is built into the power bank, so you won’t have to keep a separate charging wire in your wallet. Thanks to its magnets and MagSafe compatibility, you can even attach the external battery to the back of your phone while you charge it. If your phone or case doesn’t have a strong magnet, a magnetic ring is included in the box.

Reading on the go means having to rely on your phone, since carrying around a tablet-style e-reader isn’t exactly the definition of convenience. Fortunately, there is now a much smaller alternative: the Xteink X3. This small e-reader is a little larger than a credit card, measuring 3.86 x 2.52 inches with a thickness of 0.2 inches and a weight of 58 grams.

It has a small 3.7-inch e-ink display with a resolution of over 250 PPI. However, unlike a Kindle, it’s not a touchscreen. Instead, you have to navigate and turn pages using the physical buttons at the bottom of the screen or on the side of the device. If that doesn’t appeal to you, the Xteink X3 also comes with a gyroscope that allows you to shake the device to turn the page. Coming to power, the e-reader has a 650mAh battery that takes an hour or two to fully charge. You charge it via the magnetic pogo pin included in the box, and you can use it for up to two weeks if you read for about an hour a day.

As for storage, the e-reader does not have built-in memory. It requires at least a 16GB microSD card, which you can remove and replace with cards up to 512GB. This removable card makes it easy to transfer new books and images from your PC, especially since you don’t have a store to directly download titles like on a Kindle. The e-reader supports EPUB and TXT documents, as well as JPG and BMP image files. Conveniently, the Xteink X3 has a magnetic design, so you can attach it to the back of your phone for easier reading on the go.