This is great for partial seizures but not really applicable for anyone with generalized epilepsy (where the origin of abnormal electrical activity in the brain cannot be pinpointed).
Tech is moving along nicely for the latter type of epilepsy though - for anyone interested, the state of the art is the "Embrace wristband" which uses electrical activity across the skin to alert before a seizure occurs. It can pair with mobile devices to send SMS alerts to friends and family - very cool:
http://www.newscientist.com/article/dn26599-smartwatch-detec...