Blog
Plain-English explainers on 2FA, authenticator apps, and account security.
September 25, 2026
2FA in 2026: how 3,364 websites handle two-factor authentication
73% of the 3,364 sites tracked by 2fa.directory offer 2FA and two in three of those support authenticator apps, but only 10% of banks do. Data by sector, plus passkeys.
September 5, 2026
What is an authenticator app, and do you actually need one?
An authenticator app turns your phone into the second key to your accounts. Here's what it does, how it differs from SMS codes, and when it's worth using.
September 4, 2026
How to choose an authenticator app: 7 things that actually matter
Most authenticator apps generate the same codes. Here's what genuinely separates them — backup, device support, lock, export — and how to pick one you won't regret.
September 3, 2026
Is an authenticator app safe? What the risks really are
Authenticator apps are safer than SMS, but they're not magic. Here's what they protect you from, what they don't, and how to close the remaining gaps.
September 2, 2026
Using an authenticator app on your iPad
An iPad makes a comfortable home for your 2FA codes — bigger screen, same accounts. Here's how to set it up and use it as a backup device.
September 2, 2026
Using an authenticator app on your Mac
Signing in on a laptop shouldn't mean reaching for your phone. Here's how to get your 2FA codes on a Mac, and what to watch out for.
September 1, 2026
Authenticator apps on a Windows PC: what your options are
Most authenticator apps are phone-first. Here's an honest look at getting 2FA codes on a Windows PC, and why your phone is still the better place for them.
September 1, 2026
Getting your 2FA codes on your Apple Watch
A code on your wrist is faster than digging out your phone. Here's how Apple Watch access works for authenticator codes, and when it makes sense.
August 31, 2026
What is an OTP code?
OTP means one-time password — the short code you type after your password. Here's what the different kinds are, and which ones are actually secure.
August 30, 2026
Looking for a Google Authenticator alternative? What to compare
Any TOTP app produces the same codes, so switching is easy. Here's what to compare before you move, and how to migrate without losing access.
August 29, 2026
Can you use an authenticator app for your Apple ID?
Short answer: no — Apple ID uses its own two-factor system rather than TOTP. Here's what that means, and how to keep your Apple account secure anyway.
August 26, 2026
A simple 2FA checklist for small teams and businesses
You don't need an IT department to protect a small business. Here's a practical, no-jargon checklist for rolling out 2FA across your team's accounts.
August 25, 2026
What is TOTP? How authenticator apps generate 2FA codes
A plain-English explanation of TOTP — the technology behind the 6-digit codes in authenticator apps — and why it's more secure than SMS.
August 24, 2026
Authenticator app vs SMS 2FA: which is safer?
Both add a second layer of security, but authenticator apps protect against attacks that SMS can't. Here's the difference.
August 23, 2026
Lost your phone? How to recover your 2FA accounts
Losing the phone with your authenticator app is stressful but recoverable. Here's how to get back in — and how to prepare so it never becomes a lockout.
August 22, 2026
2FA backup codes: what they are and how to store them
Backup codes are your safety net if you lose access to your authenticator app. Here's what they do and where to keep them.
August 20, 2026
How to use 2FA while travelling abroad
Travel is exactly when SMS codes fail and lockouts hurt most. Here's how to keep your 2FA working across borders, no signal or SIM required.
August 18, 2026
7 common 2FA setup mistakes (and how to avoid them)
Turning on two-factor authentication is easy, but a few common slip-ups can lock you out or weaken your protection. Here are the ones to watch for.
August 15, 2026
Can one authenticator app hold all your accounts?
Yes — a single authenticator app can generate codes for as many services as you like. Here's how it stays organised and why one app is all you need.
August 12, 2026
Is 2FA really necessary? What a second factor actually stops
If your password is strong, do you still need 2FA? Yes — and here's exactly what it protects you from that a good password can't.
August 8, 2026
How to back up your authenticator app safely
Your 2FA codes live on one device. If that device dies, you need a plan. Here are the safe ways to back up your authenticator — and the risky ones to avoid.
August 5, 2026
Push notifications vs authenticator codes: which is safer?
Some apps ask you to tap "approve" instead of typing a code. Here's how push-based 2FA compares to TOTP — and the one attack you need to watch for.
August 1, 2026
How to protect your gaming accounts with 2FA
Game accounts hold real money in skins, currency, and years of progress — and they get stolen constantly. Here's how to lock down Epic, PlayStation, Roblox, and more.
July 28, 2026
How to turn on 2FA for your social media accounts
A hijacked social account can burn your reputation and scam your friends. Here's how to protect Instagram, Facebook, TikTok, X, and more with an authenticator app.
July 24, 2026
How to secure your crypto exchange accounts with 2FA
Crypto is a top target because transactions can't be reversed. Here's how to lock down your exchange accounts with an authenticator app — and mistakes to avoid.
July 20, 2026
Hardware security keys vs authenticator apps
Security keys like a YubiKey are the gold standard for 2FA, but authenticator apps cover almost everything for free. Here's how they compare and how to combine them.
July 16, 2026
SIM-swap attacks: what they are and how to stop them
A SIM swap lets an attacker steal your phone number — and any SMS codes sent to it. Here's how the attack works and why an authenticator app defeats it.
July 11, 2026
What is phishing, and can 2FA stop it?
Phishing tricks you into handing over your password on a fake page. Here's how it works, how much 2FA helps, and how to avoid getting caught.
July 7, 2026
Secure your email first: the account that protects all the others
Your email inbox is the master key to every other account. Here's why it should be the first place you turn on 2FA — and how to do it.
July 2, 2026
Passkeys vs authenticator apps: what's the difference?
Passkeys and authenticator apps both make your accounts harder to break into, but they work differently. Here's how they compare and when to use each.
June 27, 2026
"Invalid code"? Why your authenticator code isn't working
If your 6-digit code keeps getting rejected, the usual culprit is clock drift — not a broken app. Here's how to fix it and get back in.
June 22, 2026
QR code vs setup key: two ways to add a 2FA account
When you enable 2FA you can either scan a QR code or type a setup key by hand. Here's what each one is, when to use which, and why they produce the same codes.
June 17, 2026
Authenticator app vs password manager: do you need both?
A password manager remembers your passwords; an authenticator app proves it's really you. Here's how they differ and why using both is the strongest setup.
June 12, 2026
How to move your authenticator app to a new phone
Getting a new phone doesn't have to mean losing your 2FA codes. Here's how to transfer your authenticator accounts safely — and what to do if you already wiped the old one.
June 9, 2026
What is two-factor authentication (2FA)? A beginner's guide
2FA adds a second lock to your accounts so a stolen password isn't enough to get in. Here's what it is, how it works, and how to turn it on.