Spy Review

We have seen a calculator hide a covert camera before which has been covered by this site, but this is an even better idea – a calculator that is also a listening in device built around GSM technology.

The calculator picks up sounds with a coverage of around 20 feet radius around where it is positioned. It is a normal functioning calculator so it won’t raise any suspicion as the high sensitive microphone is stacked inside.

It is a clever device that secretly sends an alert via SMS whenever sounds are picked up so you will know when to listen in rather than wait impatiently. It also has a long (30 days) standby time meaning you can leave it for a long time if there is no activity without having to replace batteries.

The reason why I say this is better than the covert calculator camera is because a small hole needs to pip out to record the activity and the recording will be hindered somewhat by where the calculator is placed, these restrictions do not apply here with this one because the calculator hides the microphone inside so there is no visible element that might be a giveaway and also because sound can be picked irrespective of where the calculator is placed.

But the price is quite a bit on the expensive side; at well over £300, there are definitely cheaper options available, but this sound detection calculator does provide an excellent disguise other similar listening devices lack. There may also be cheaper imitations available from an online electronics store in China. If there is, I doubt it will match the quality of this particular one.