Both type 1 and type 2 diabetes patients are prone to foot swelling, among other foot issues and it can lead to some serious problems such as infection or amputation of the foot if not checked. Early detection is crucial to head off any serious complications and Ma and her co-founder Veronica Tran believe built-in sensors are the key. Siren’s socks are closer to the skin than a foot pad in your shoe. The sensors are woven into the fabric of the sock to detect when there is ipad in your shoe. All information is then uploaded to an app on your smartphone to alert you to an issue. All data is stored on the sock, on the app and in the cloud and when the sock detects a high-temperature difference — meaning there’s an injury of some sort to the foot — the app will send you an alert to check your foot. Although these are wearables, there’s no need to charge the socks. Each sock comes with a full battery built to last for the whole six months lifespan.