The National Audit Office's annual review of HMRC, published earlier in October, found that more than 80% of investigations into possible fraud or error were carried out after an award had been made because "information on some risks was not available at (the pre-award) stage".
The study found the wireless network could measure breathing within 0.4 to 0.2 breaths per minute, an insignificant error rate given that most breathing monitors round to the nearest breath per minute, he says.