Secondlook
Start test
DetectedMacBook Air 13" (M1, 2020)

No password needed · 2 minutes

The four things a website cannot see on its own

Activation Lock, device management, battery wear and drive health decide whether a used Mac is worth buying — and none of them are visible to a web page. One read-only command reads all of them. It installs nothing, changes nothing, and never asks for a password.

Step one

Copy this command

one-time code: …
Preparing…

That code is generated fresh for this inspection. Output carrying a different code is rejected, so a result captured earlier — or on a healthier Mac — cannot be passed off as this one's.

Step two

Run it on the seller's Mac

  1. Press ⌘ Space, type terminal, press Return.
  2. Press ⌘ V to paste the command, then Return to run it.
  3. It prints one line: Copied. The result is already on the clipboard — there is nothing to select.

It only reads. If anything asks for a password, you have pasted the wrong thing — close Terminal and start again.

Step three

Bring the result back

Or just press ⌘ V anywhere on this page. Nothing is uploaded — the text is read here, in this browser.

Worth buying alongside it

The bits and pieces most second-hand Macs turn up without

Affiliate links, and the illustrations are our own drawings rather than retailer images — nothing on this page is loaded from a third party. They cost you nothing extra and are what keeps every test here free.