If you need a device to record and share 12-lead ECGs, check out the Kardia 12L. This handheld, AI-powered ECG system is geared for medical professionals and uses a single-cable design that's been trained on more than a million ECGs to guide placement of the leads and avoid mistakes. It has a 3-step process for capturing and sharing ECGs, and other advantages include the ability to use ordinary snap or tab electrodes, a capacity to record up to 8,500 ECGs on two AAA batteries, and a compact design.