Key points from article :
One problem with nanobots (aka capsule endoscopes) is tracking their location once ingested.
ATOMS (addressable transmitters operated as magnetic spins) technique uses magnetic fields.
Integrated sensors and resonators mimic the magnetic resonance properties of atoms.
The chip has a surface area of 1.4 mm²
In future could incorporate sensors into small pills that detect pH, temperature, pressure and blood sugar concentrations.
The study was published in the Nature Biomedical Engineering.
