Seizures can be difficult to recognize by machines. The different kinds don't look like each other, don't feel like each other. Most focus on certain types of movement; muscle clenching, thrashing, the larger the movement the easier it is for a machine to recognize. Unfortunately, that doesn't work for more than a small segment of the population. SAMi focuses on movement, but brings a nice balance between constant alarms when your loved one turns over and missing out on quieter seizures. It has a 'movement monitor' which glows red following changing movements. This can include opening eyes. The alarm intensity is customizable and can be turned on and off during certain hours. It includes customizable sound which on the high end can pick up turning over, changing breath, and quiet rustling at a level which can wake up the caregiver (YMMV). It also records video of small movements and changes, so caregivers can browse through to see absence or atypical seizures in the middle of the night. Movements of interest can be locked and emailed to you or a physician.