Do you ever wonder whether we’re all getting just a little bit too obsessed with personal health? It’s like we’ve suddenly opened a birthday box full of toys which can measure this and measure that, and we’re now addicted to tracking our bodies like ageing hypochondriacs.

Will it stop us dying? Probably not. But in the meantime we can feel good about the fact that our blood pressure is blah, and our LDLs are blah. AliveCor offers yet another twist on the genre, by offering a professional grade ECG monitor in the form of a smartphone case.

Slip it over your iPhone, Samsung or other phone, and grip the rear metal plates, and the software will convert your finger’s electrical impulses into ultrasound signals which deliver your heart rate data. Apparently it’s very useful for measuring things like arrhythmias, which are abnormal heart rhythms, so you can get advance warning of any serious problems with the old ticker.

Just one more way to get paranoid about your dodgy body. The kit costs $199.00 (or £169.00), and works with free apps from the iOS store or Android Play store.