Main Takeaway: A cold wallet is a physical device that keeps your private keys offline and signs transactions on the device. In 2026 cold wallets connect to your phone in four ways: QR code, NFC, Bluetooth or USB. Choose by what you do most, holding crypto untouched for long stretches or using it often.
Quick reference
| Term | What it means |
|---|---|
| Private key | The credential that controls your funds. Whoever holds it can move them. |
| Connection method | How the cold wallet exchanges transaction data with your phone or computer |
| NFC | Near-field communication, a short-range tap of a few centimetres |
| BIP39 | The industry standard for 12 or 24 word recovery phrases, readable by wallets from any brand |
How do you choose a cold wallet?
Choosing a cold wallet comes down to how the device connects to your phone, how often you will use it and whether your recovery phrase can move to another brand. The connection method decides what path transaction data takes to an internet-connected device, and it shapes daily use more than any other spec.
The four cold wallet connection types
QR code
A QR cold wallet has no Bluetooth, no WiFi and no USB data connection. The device scans the unsigned transaction from your phone, signs offline and shows a signed QR code for the phone to broadcast. The trade-off is time, since every transaction takes two scans, and the device needs charging.
NFC
An NFC cold wallet signs when you tap it against your phone and responds only within a few centimetres. It is usually a card powered by the tap itself, so there is nothing to charge. The trade-off is that the card has no screen, so you review transaction details in the phone app.
Bluetooth
A Bluetooth cold wallet pairs with your phone wirelessly, which gives smooth mobile signing. The trade-off is a radio on the signing device, and the Bluetooth protocol has a public history of disclosed vulnerabilities such as BlueBorne and KNOB.
USB
A USB cold wallet plugs into a computer, and the cable carries transaction data both ways. The trade-off is mobility, because phone use needs an adapter, and each session opens a wired link to that computer.
Connection types at a glance
| Feature | QR code | NFC | Bluetooth | USB |
|---|---|---|---|---|
| Data path to your phone | Camera and screen, no radio or cable | Tap within a few centimetres | Paired radio, up to about 10 m | Cable to a computer |
| Phone use | Yes, by scanning | Yes, by tapping | Yes, by pairing | With an adapter |
| Charging | Yes | No, powered by the tap | Yes | Through the cable |
| Where you review details | Device screen | Phone app | Device screen | Device screen |
What else to check before you buy
- BIP39 recovery: your phrase restores on wallets from any brand, while a proprietary recovery model ties access to one company.
- Offline key generation: the key is created inside the device and stays there.
- Coin support: confirm the chains you hold before you order.
For setup steps that trip people up, see the most common hardware wallet beginner mistakes.
ELLIPAL Titan 2.0: the QR cold wallet
The ELLIPAL Titan 2.0 is a QR cold wallet with no Bluetooth, no WiFi and no USB data connection. Its recovery phrase is generated inside a secure chip, and keys are generated and stored offline. The ELLIPAL Titan 2.0 reads each transaction itself and shows the receiving address and amount on its touchscreen before you approve, which ELLIPAL calls Clear Signing.
Designed for: long-term holdings, larger balances and anyone who wants to read every transaction on the device screen.
ELLIPAL X Card: the NFC cold wallet
The ELLIPAL X Card is an NFC cold wallet in card form. Its keys stay inside an EAL6+ secure chip, a Common Criteria certification level for security chips. The ELLIPAL X Card signs with a tap, has no battery and no ports, and sets up in about 3 minutes. The recovery phrase appears on the offline X Card Starter during setup, and the card also imports any BIP39 phrase you already have.
Designed for: frequent sends, mobile-first users and anyone who wants a cold wallet that lives in an everyday wallet.
Which situation matches yours?
- You buy and hold for years: the ELLIPAL Titan 2.0, with every transaction checked on its screen.
- You send from your phone most weeks: the ELLIPAL X Card, which signs with a tap.
- You already use a software wallet: either ELLIPAL wallet imports your BIP39 phrase.
- You hold savings and also spend: savings on the ELLIPAL Titan 2.0, spending balance on the ELLIPAL X Card.
For phone-first signing, read our guide to mobile-first cold wallets.
Where ELLIPAL fits
The ELLIPAL Titan 2.0 signs by QR code and has no Bluetooth, no WiFi and no USB data connection. The ELLIPAL X Card signs by NFC tap and has no battery and no ports. Both keep keys offline, both follow BIP39 and BIP44, and both run in the same ELLIPAL App. Titan guards the vault. X Card rides with you. Together, you're covered everywhere. Different tools. Same mission.
Frequently asked questions
What is the difference between a cold wallet and a hardware wallet?
A hardware wallet is any physical device that stores private keys, and a cold wallet is one that keeps those keys offline. Most hardware wallets are cold wallets, and they differ mainly in how they reach your phone: Bluetooth, USB, QR codes on the ELLIPAL Titan 2.0 or an NFC tap on the ELLIPAL X Card.
What happens if I lose my cold wallet?
Your crypto lives on the blockchain, so a lost device does not mean lost funds. If you kept your 12 or 24 word recovery phrase, you can restore the wallet on a new device and move your funds. Both the ELLIPAL Titan 2.0 and the ELLIPAL X Card support BIP39 recovery, so a replacement can come from any compatible brand.
Can I still reach my crypto if ELLIPAL stops operating?
Your funds do not depend on ELLIPAL being in business. The ELLIPAL Titan 2.0 and the ELLIPAL X Card both use BIP39, so your recovery phrase restores on any BIP39 wallet from another brand. ELLIPAL is a self-custody hardware wallet company, and it does not hold your funds, so your balance stays on the blockchain under your keys.
Is a cold wallet better than a hot wallet for daily use?
A hot wallet keeps keys on an internet-connected phone or browser, which makes it quick but exposed to phishing and malware. A cold wallet adds one physical step to each transaction, a tap or two scans, in exchange for keys that stay offline. Our cold wallet vs hot wallet guide walks through how people split funds between the two.
About ELLIPAL
ELLIPAL has made self-custody hardware wallets since 2018, with more than 1 million users in 140+ countries. ELLIPAL wallets support 10,000+ tokens across 45+ chains and follow the BIP39 and BIP44 standards. ELLIPAL does not hold customer funds or give investment advice.
Pick the one that matches how you use crypto: the ELLIPAL Titan 2.0 for scanning to sign, or the ELLIPAL X Card for tapping to sign, and you're ready to go.