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Can Burglars Jam Wi-Fi Cameras? Why Your Door Needs a Manual Backup

by | Oct 31, 2026 | Home Security

uPVC back door of a UK house at night under a security camera – HOLDOOR guide: can burglars jam your cameras?

Yes, and that is why a camera on its own is not enough. Police forces in the US have reported burglaries in which Wi-Fi jammers were used to knock out cameras and alarms before the burglars went in. In April 2026 the UK Government warned that criminals are using jamming devices to break into homes by disabling security systems such as video doorbells. Using a jammer is a criminal offence in the UK, but burglars are not known for following the law.

This guide explains the risk in plain terms, without a how-to. It also explains why a simple manual device on the inside of your door still matters when the technology goes quiet.

The weak spot in a system that needs a signal

Many home cameras, video doorbells and alarm sensors send their alerts over Wi-Fi. That is convenient, but it means they depend on the signal. If the signal is blocked, the camera may not stream, the alarm may not report and your phone may never buzz. You might only find out what happened once the signal returns and you check the footage.

In 2024 the Los Angeles Police Department and nearby Glendale police warned residents about burglaries using Wi-Fi jammers. Their advice was to hardwire cameras and alarms, fit back-up batteries and use sturdy locks. In Minnesota, police linked jammers to a string of burglaries in which safes and jewellery were taken.

Ring, Nest and similar products are still worth having. They deter many burglars and they record evidence. The point is simply that anything relying on a radio signal can, in some cases, be switched off from outside your home.

The door is still the weak point

Most UK uPVC and composite doors are locked with a euro cylinder. The Door & Hardware Federation estimated there are 45 million residential entrance doors in the UK, and in 2014 the industry warned that almost 70% of uPVC and composite doors were vulnerable to cylinder snapping and other lock attacks. West Yorkshire Police said cylinder snapping was used in 20 to 25% of burglaries in their area. These are older figures, and many doors have been upgraded since, but millions have not.

We are not going to describe how these attacks work. Too much of that is already online. What matters to you is this: a basic lock can be beaten, sometimes quickly and quietly, and a beaten lock means an open door.

The worst case: a quiet break-in while you sleep

Picture it. The cameras drop out. Nothing alerts you. Someone deals with the lock on the back door while you are asleep upstairs. If the door then swings open, they are inside your home in silence. You may not know until morning. If you are unlucky, you wake up while they are still there.

Break-ins while people are at home are rarer than break-ins at empty houses, but they are the ones people fear most. Our guide to silent break-ins at night covers the basics of locking up properly. For real examples, see Greater Manchester burglary court cases.

Old-fashioned, manual and nothing to switch off

This is why we made HOLDOOR. It has no batteries, no Wi-Fi and no app, so there is nothing to jam, hack or run flat.

Door Jammer – HOLDOOR hooks under the inside handle of a uPVC door and braces it against the floor. Even if the lock is snapped, bumped or picked, the door stays shut. Forcing it becomes slow and noisy, which is the opposite of what a quiet burglar wants. It is fitted from the inside, so it protects you when you are home, including at night when you are most exposed.

Door Handle Guard – HOLDOOR is our second manual option. It is a lockable steel cover that drops over the inside lever handle so the handle cannot be pressed down. It needs a Secure Keeper fitted to the frame, so it is not a travel product.

Neither replaces your camera or alarm. Think of them as the layer that still works when everything electronic goes quiet.

See the side-by-side comparison: what still works when the signal goes quiet.

Five things to do tonight

  1. Check your cylinder. Ask a locksmith whether your uPVC door has a TS 007 3-star or Sold Secure Diamond cylinder. If not, upgrade it.
  2. Hardwire what you can. Wired cameras, or cameras that record to a local card or hub, keep recording when Wi-Fi drops.
  3. Ask about interference alerts. Ask your alarm company whether your system warns you if its signal is interrupted.
  4. Brace the back door at night. Fit a door jammer before you go to bed.
  5. Keep keys away from the door. Never leave them in the lock or near the letterbox.

FAQ

Are Wi-Fi jammers legal in the UK?

No. Using any device to deliberately interfere with wireless signals is a criminal offence under section 68 of the Wireless Telegraphy Act 2006. Ofcom says the maximum penalty is up to two years in prison and/or an unlimited fine. In April 2026 the Government asked for evidence on whether simply owning a jammer should also become an offence.

Does the Door Jammer need power or Wi-Fi?

No. It is purely mechanical, so a power cut, a dead battery or a blocked signal makes no difference to it.

Should I get rid of my camera?

No. Cameras deter burglars and record evidence. Choose ones that record locally or are wired where possible, and add a physical barrier at the door.

What happens in a fire?

Know where the key is. In a fire: find the key, remove the Door Jammer or Door Handle Guard, unlock the door and leave the building.

About HOLDOOR

Door Jammer – HOLDOOR is Sold Secure Bronze rated and Secured by Design accredited (Police Preferred Specification). It adjusts from 70cm to 120cm and fits most UK single-handle uPVC doors, with the handle on the left or right. No drilling or tools are needed. It is made in Britain from British steel and costs £90 (offer ends 31 December 2026), with free UK delivery, 30-day returns (free return postage if unused and in original packaging) and a 2-year warranty. It is not for sliding, French, double or patio doors.

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