Guides

• Network and Wi-Fi Where to put the router

  A lot of slow Wi-Fi is a placement problem. Move the router before you buy anything.

• Smart home Before you buy a smart plug

  It switches the socket, not the thing in it. That one fact decides what it is good for.

• Audio and hearing What noise cancelling can and cannot do

  It silences the drone of an aeroplane and not the child in the next seat.

• Health and personal care What a bathroom scale actually measures

  Weight it gets right. Everything else on the screen is a guess, and it helps to know how the guess is made.

The words on the box are in the glossary. If there is a thing in your house you would like explained, tell us.