YubiKey Case: PLA+ vs Metal — Which Protects Your Security Key Better?
When looking for a case for your YubiKey, you basically find two options: metal cases and PLA+ cases. At first glance, the metal one looks more robust — but there are important details that make a real difference in everyday use.
Quick comparison
| Feature | Metal case | PLA+ case |
|---|---|---|
| NFC without removing the key | ❌ You need to take it out | ✅ Works directly |
| Closing system | ⚠️ Internal ball bearing (may lose tension) | ✅ Adjustable Chicago screw |
| Risk of falling out | ⚠️ Depends on bearing wear | ✅ Firm and stable fit |
| Weight | ⚠️ Heavier | ✅ Lightweight |
| Available colors | ❌ Metal only | ✅ Black, blue, and red |
| Manufacturing | Asia | ✅ EU |
Why the metal case is not always the best option
The solid appearance of metal cases hides several drawbacks in daily use:
Metal interferes with the NFC signal. To authenticate, you have to remove the YubiKey from the case every time — which cancels out much of the convenience.
The mechanism uses an internal ball bearing for closing. Over time, it can lose tension, making the key less securely held.
Metal adds noticeable weight to your keychain. Something to keep in mind if you carry it with you all day.
Why PLA+ is the smart choice
PLA+ does not interfere with the NFC signal. Authenticate with a direct tap, without handling the case.
The closure uses a Chicago screw that can be adjusted precisely without pressing on the USB connector. Firm, durable hold with no risk of damaging the key.
It does not add unnecessary weight to your keychain. Perfect for carrying all day.
Made in Europe using high-quality PLA+. Durable, lightweight, and recyclable.
⚫ Black 🔴 Red 🔵 Blue — choose the one that best matches your style.
Our verdict
If you use NFC to authenticate, the metal case forces you to remove the key every time. The PLA+ case is designed to keep everything working smoothly — one tap and you’re done.
The cases
Frequently asked questions
Does the PLA+ case protect as well as a metal one against impacts?
For everyday use, yes. PLA+ absorbs light impacts and scratches well. The YubiKey itself is designed to be robust — what matters is that the case does not damage the connector, and the adjustable Chicago screw ensures that.
Does NFC really work through the PLA+ case?
Yes. PLA+ is a non-conductive material that does not interfere with the NFC signal. You can authenticate by holding the YubiKey near your phone directly with the case on.
What is a Chicago screw and why is it better?
A Chicago screw is a two-part fastener that screws together. It allows you to adjust the tension precisely without pressing on the YubiKey’s USB connector. It is more reliable than an internal ball bearing because it does not lose tension with use.
What colors is the PLA+ case available in?
Available in black, blue, and red. You can choose the color when placing your order on Amazon.
