Activation link vs activation code
"Activate by code" and "activate by link" are two versions of the same idea: confirm an account on a second device. They look different, and the safety rules differ slightly.
Activation code (shown on the device)
The device displays a short code and a web address. You open that address on a phone or computer, sign in, and type the code. The code is generated by the device you are activating, so it is safe to type on the official page.
Activation link (sent to you)
Some services email or text you a link to confirm a new sign-in or a new account. Clicking it opens a page that completes the step. Links are convenient but carry more risk, because scammers imitate "confirm your account" emails.
How to stay safe with each
- Codes: only ever enter a code on the exact web address your device shows. Never give a code to a person who contacts you.
- Links: check the sender and hover over the link to see the real address before clicking. If an email you did not expect asks you to "reactivate", go to the service's website directly instead of clicking.
Frequently asked questions
I got an email with an activation link I did not request.
Do not click it. Go to the service's website directly and check your account. Unexpected "activate/confirm" emails are a common phishing tactic.
Which is safer, a link or a code?
A code you generate on your own device and type on the official page is very safe. Links are fine when you requested them and you verify the address first.