The Best 2FA Devices and Options in the UK (2025 Guide)

The Best 2FA Devices and Options in the UK (2024 Guide)

Online security is more important than ever, and two-factor authentication (2FA) is one of the best ways to protect your accounts. But with so many options available, which 2FA methods and devices are trusted and recommended in the UK?

In this guide, we’ll break down the most popular 2FA devices and services available in the UK, complete with pros and cons for each. Whether you’re securing online banking, email, or business accounts, there’s a solution for every need.

1. Authenticator Apps

What are they?
Authenticator apps generate time-based one-time passwords (TOTP) for use when logging into secure services. They’re free, easy to use, and work on smartphones and tablets.

Trusted examples in the UK:
Google Authenticator, Microsoft Authenticator, Authy

• Pros:
  • Quick and easy to use
  • Works without an internet connection
  • Free and widely supported
• Cons:
  • Can lose access if you change phones and haven’t backed up
  • Requires a smartphone

Best for: Everyday users and small businesses looking for convenience and security.

2. SMS Codes

What are they?
A one-time passcode is sent via text message to your mobile phone whenever you log in. It’s a simple option used by most online services.

• Pros:
  • No additional apps or devices required
  • Easy for beginners
• Cons:
  • Vulnerable to SIM swap attacks
  • Can fail if you don’t have mobile signal

Best for: Basic 2FA security and accounts where convenience is key.

3. Email-Based Codes

What are they?
Receive a code in your inbox and use it to complete logins. Email-based codes are often used as a fallback 2FA method.

• Pros:
  • Accessible on any device with email access
  • No app or hardware needed
• Cons:
  • Less secure than app or hardware-based options
  • Relies on email security

Best for: Low-risk accounts or as a backup option.

4. Hardware Security Keys (FIDO2 / U2F)

Hardware security keys are physical devices that add a robust layer of protection to your online accounts. These devices use FIDO2 or U2F protocols to prevent phishing and unauthorised access. Here are six trusted devices available in the UK, each with pros, cons, and average prices:

4.1 YubiKey 5 Series

The YubiKey 5 Series is one of the most popular and trusted hardware keys, supporting USB-A, USB-C, NFC, and even Lightning connections.

• Pros:
  • Highly versatile and compatible
  • Supports multiple protocols (FIDO2, U2F, OTP)
  • Waterproof and crush-resistant
• Cons:
  • Premium price point
  • Small and easy to misplace

Average price: £45-£70

4.2 Thetis FIDO2 Security Key

The Thetis FIDO2 key offers a budget-friendly alternative with a solid build and easy setup for Windows and Google accounts.

• Pros:
  • Affordable and durable metal casing
  • Easy setup with popular platforms
• Cons:
  • No NFC support
  • Limited to USB-A

Average price: £20-£30

4.3 SoloKeys Solo V2

SoloKeys Solo V2 is an open-source security key that appeals to tech enthusiasts who value transparency and community-driven development.

• Pros:
  • Open-source firmware
  • USB-C and USB-A options
  • Highly affordable
• Cons:
  • Less polished build quality
  • Limited availability

Average price: £25-£40

4.4 HyperFIDO Key

The HyperFIDO Key is known for its simplicity and reliability, offering basic U2F protection without complex features.

• Pros:
  • Simple, plug-and-play
  • Affordable price point
• Cons:
  • No NFC or advanced protocol support
  • Plastic build is less durable

Average price: £15-£25

4.5 Kensington VeriMark Guard

The Kensington VeriMark Guard combines biometric fingerprint authentication with security key protocols for added protection.

• Pros:
  • Biometric fingerprint sensor included
  • Multi-factor security in one device
• Cons:
  • Higher price tag
  • Primarily USB-A only

Average price: £70-£90

4.6 Feitian MultiPass K9

The Feitian MultiPass K9 supports both USB and Bluetooth connections, making it perfect for mobile use without cables.

• Pros:
  • Bluetooth and USB connectivity
  • Supports multiple authentication protocols
• Cons:
  • More expensive than standard keys
  • Requires charging

Average price: £60-£85

• Pros:
  • Highest level of security
  • Works across multiple devices
  • Can’t be phished
• Cons:
  • Cost involved
  • Small, easy to misplace
  • May require USB-C or adapters

Best for: High-security accounts, business users, and tech professionals.

5. Biometric Authentication

What is it?
Using fingerprint scans, facial recognition, or iris detection to log in securely. Supported by most smartphones and modern laptops.

Trusted devices in the UK:
Apple Face ID & Touch ID, Windows Hello, Samsung Galaxy Biometric Sensors

• Pros:
  • Very convenient
  • No need to remember codes
  • Built into most devices
• Cons:
  • Not supported by every website
  • Hardware dependent
  • Privacy concerns for some users

Best for: Mobile users and those wanting seamless, fast authentication.

6. Bank Card Readers and Banking Authentication Apps

What are they?
Small devices or apps used by banks to generate login codes or approve transactions.

Trusted devices/services in the UK:
Barclays PINsentry, HSBC Secure Key, NatWest Card Reader, Lloyds Authentication App

• Pros:
  • Bank-grade security
  • Simple to use
  • Adds extra protection for finances
• Cons:
  • Physical readers can be inconvenient
  • Another device to carry and store safely

Best for: Online banking and financial accounts.

7. Smartphone Push Notifications

What are they?
A login prompt is pushed to your phone or tablet asking you to approve or deny login attempts.

Trusted services:
Google Prompt, Microsoft Authenticator, Duo Mobile

• Pros:
  • Simple “Approve or Deny” interface
  • No need to manually enter codes
  • Secure and quick
• Cons:
  • Dependent on having your phone with you
  • Can be disrupted if device is offline

Best for: Users who want quick, one-tap authentication.

8. Password Managers with Built-In 2FA

What are they?
Password managers like 1Password, LastPass, and Bitwarden can store 2FA codes alongside your passwords, streamlining secure logins.

• Pros:
  • All-in-one convenience
  • Encrypted storage of codes and passwords
  • Easy backup and transfer
• Cons:
  • Subscription costs for premium features
  • Single point of failure if not secured well

Best for: Anyone managing multiple online accounts and security keys.

Conclusion

No matter your security needs, there’s a two-factor authentication solution available for you in the UK. From simple SMS codes to robust hardware security keys, adding an extra layer of protection is one of the smartest things you can do today.

Need help setting up 2FA? Check out our related guides!