It is hoped the pills could be used to cut the number of drugs that are wasted each year as well as alert family members if medication isn’t being taken properly by elderly relatives.
Each pill contains a sensor that transmits a signal to a patch worn by the patient when the sensor itself hits the stomach acid after being swallowed. This patch then sends the data via text message or e-mail, showing that the pill has been taken.
The sensor is the size of a grain of sand and is embedded into the pill alongside copper and magnesium which make an electrical circuit when they come into contact with stomach acid, much like a potato battery. This electrical circuit powers the sensor.
The digital pill has been trialled as an extra dummy pill alongside normal high blood pressure medication by Lloyds Pharmacy, but there are hopes it could be used in active drugs in the future.
Read more at Telegraph