Please checkout How High Are iPad SAR Levels? from this IPF Thread a couple of years ago. Basically, the SAR (Specific Absorption Rate) levels emitted from an iPad are well w/i government regulations and considered safe (NOW, will this be true in 10 years or so - an unknown?) - and keep in mind that the emissions from an iPad (whether from the screen, Bluetooth, Wi-Fi, or cellular signals) are in the 'non-ionizing' frequencies of the EM (electromagnetic) spectrum vs. the more dangerous 'ionizing' higher frequencies (e.g. UV light & X-rays) (reference HERE) - SO, I would say 'not to worry' - Dave