Passkeys, Explained: A Simpler, Safer Login for Your Toronto Business

Passwords are the weak point in most businesses. People reuse them across accounts, write them on sticky notes, and type them into convincing fake login pages without realizing. Passkeys are the technology built to replace passwords, and they fix the parts that cause the most trouble. A passkey lets you sign in with the same fingerprint, face scan, or PIN you already use to unlock your phone or laptop — no password to type, so nothing for an attacker to steal, guess, or trick out of you. Here’s what they are, why they’re so much harder to attack, and whether your business should start using them.

What a passkey is

A passkey replaces your password with your device’s own security. Instead of typing a password, you prove it’s you the same way you unlock your phone: a fingerprint, a face scan, or a PIN.

When you set up a passkey for a website, your device creates two matching keys. The private key stays locked on your device and never leaves it. The public key is stored by the website. When you sign in, the site sends a challenge that only your private key can answer; your device answers it once you confirm with your fingerprint or PIN, and you’re in. The website never sees a password, because there isn’t one. This comes from a standard called FIDO, which Apple, Google, and Microsoft all build on.

Why they’re harder to attack than passwords

A password is a secret you share with the website every time you log in — exactly what attackers go after. A passkey has no shared secret, and that one difference fixes the biggest problems:

• They can’t be phished. A passkey only works on the real website it was created for. Land on a convincing fake and it simply won’t work — there’s nothing to hand over. That matters, because phishing is how most break-ins start.
• There’s no password to steal in a breach. The website only keeps your public key, which is useless on its own. If the company gets hacked, there’s no password list to grab and try on your other accounts.
• Nothing to reuse or forget. Each passkey is unique to one site and created automatically, so weak and reused passwords stop being a problem.

Older methods like text-message codes and app-approval prompts can still be tricked out of people. Passkeys can’t.

Where you can use them already

Support has spread fast. You can already sign in with passkeys to Microsoft, Google, and Apple accounts, plus a growing list of banks, password managers, and business tools — and Apple, Google, and Microsoft have built passkeys into their phones, laptops, and browsers, so the device in your pocket can already store and use them. Two types are worth knowing: a synced passkey is backed up to your Apple, Google, or Microsoft account, so it works across all your devices and covers you if you lose one; a device-bound passkey stays on a single device (like a physical security key you plug in), the most locked-down option and a common pick for sensitive accounts.

Should your business use them?

For most, yes — and you can start small; there’s no need to switch everything overnight or drop passwords on day one. If you use Microsoft 365, passkeys are already available through Microsoft Entra at no extra cost, including the free tier — staff can sign in with a passkey in the Microsoft Authenticator app, a security key, or their own device. Google Workspace supports them too. They’re also just faster: Microsoft says a synced-passkey sign-in takes about 3 seconds, versus roughly 69 seconds for a password plus a traditional MFA code. Across a whole team, that adds up.

A sensible rollout: turn passkeys on for your most sensitive accounts first — administrators, finance, and anyone who can move money or change systems; let everyone else add a passkey as a faster, safer option alongside their normal login at first; and make sure each person has a backup (a second device or a security key) so a lost phone doesn’t lock anyone out. Your IT provider can switch this on and run the rollout so nobody gets locked out.

What to watch out for

Passkeys aren’t magic, and a few things are worth planning for. Account recovery: if someone loses the only device with their passkey and has no backup, they can get locked out — a synced passkey or a second registered device fixes this, but set it up ahead of time. Coverage gaps: support is growing fast, but some older systems and smaller vendors still rely on passwords, so you’ll run both side by side for a while. Shared devices and logins: passkeys are tied to a person and their device, so any shared computers or accounts need their own plan.

Frequently asked questions

What is a passkey in simple terms?

A way to log in using your fingerprint, face, or PIN instead of a password. Your device proves it’s you to the website, and no password is ever typed or stored.

Are passkeys safer than passwords?

Yes. They can’t be phished, there’s no password for a hacker to steal in a breach, and nothing to reuse or forget. Security agencies recommend FIDO-based logins — which is what passkeys are — as the strongest widely available option.

What happens if I lose the device with my passkey?

A synced passkey is backed up to your Apple, Google, or Microsoft account and still available on your other devices. A device-bound passkey with no backup means using a recovery method — which is why setting up a second passkey or device in advance matters.

Does Microsoft 365 support passkeys?

Yes, through Microsoft Entra at no extra cost, including the free tier. Staff can use a passkey in the Authenticator app, a security key, or their device.

Do passkeys replace multi-factor authentication?

A passkey can count as MFA on its own — unlocking it needs both your device (something you have) and your fingerprint, face, or PIN (something you are or know), covering two factors in one step.

Rolling passkeys out safely takes a little planning. Our managed IT services in Toronto handle the staged rollout, starting with the accounts where account security matters most.

Prepared by the EB Solution team — managed IT and Microsoft 365 security for businesses across the Greater Toronto Area. Curious whether passkeys fit your setup? We’ll roll them out safely, starting with your most sensitive accounts.