In January, Norvartis spent ~$24 million to ensure its access to the device made by Proteus Biomedical.
“ Joe Jimenez, head of pharmaceuticals at Novartis, said tests using the system – which broadcasts from the “chip in the pill” to a receiver on the shoulder – on 20 patients using Diovan, a drug to lower blood pressure, had boosted “compliance” with prescriptions from 30 per cent to 80 per cent after six months ”
(Jack, A. Financial Times . Novartis chip to help ensure bitter pills are swallowed, 2010 http://www.ft.com/cms/s/0/c1473442-a6f4-11de-bd14 00144feabdc0.html#axzz15OLuY0CD )