 Two duplicate novel medical devices conforming to safety regulation BS EN 60601 containing the unique algorithm will be evaluated in clinical trials at two hospitals over a 14 month period. Each device is time synchronised with an Electroencephalographic EEG videotelemetry system which is the gold standard in identifying different seizure types recording from scalp electrodes. The devices will be monitoring participants from 3 months and older children and adults. The algorithm was created from results from a PhD where 527 seizures were categorised into different seizure types. Sensitivity of identifying seizures was 91 and specificity was 75 using an optimal trigger level and algorithm. This trial will investigate how reliable the algorithm is in practice and determine an optimal trigger level.. 