A classroom app whose advertised feature is sending you photographs of your child is doing something different from the photo-sharing you have thought about. Three separate permissions are hiding in one form, and here are seven requests that are reasonable to make out loud.

Six messaging apps use the word private to mean six different things. Read what each developer actually committed to in its own store text, and the four questions that decide whether the word covers what you are worried about.

A TOTP secret lives on the device you scanned the QR code with. Two architectures, the work-account exception, and the order of operations that avoids the lockout.

Twelve scanner listings, four places a "free" app actually charges you, and a ten-minute test that tells you which one you installed.

A purchase is a record of something that already happened. A subscription is an authorisation for something that has not happened yet. They live in different menus, they are cancelled in different places, and only one of them keeps billing after you delete the app.

Free-to-play is a pipeline, not a price. Where to put the limit so a "Continue" button cannot reach it, and the five holes a cap leaves open.

Some companion apps need a subscription, some need an entitlement, some only need a box on your shelf. Which layer an app checks decides what breaks on the day you cancel.

Unattended access needs a live, signed-in, listening machine. Four links have to hold for a hijack — and a security-sheet walk-through of which ones you can actually break.

Zoom Workplace, the one for Intune, Zoom Rooms and the Chromebook client are four different downloads with one brand on them. Here is what each is for, how to tell them apart on a home screen, and which one a normal person should install.