Meet Impact by HIT: a wearable device measures head impact force. It can be attached to any helmet and communicates with devices via Bluetooth. Its battery lasts up to 72 hours of live recording. The device flashes red to indicated when too much force has been received.
The HIT Impact logs recordings under your user profile. You have the option to adjust the G-force level. Your 60 highest impacts are recorded, so you can better understand the risks posed by your favorite activity.