To this end, the lens-free CMOSimage sensor (CIS), usually installed within the camera module, was integrated with the sensor cartridge by physically contacting the CIS with the signal generation part of the cartridge [7].
This approach permitted fabrication
of
the miniaturized immunosensor, which was also independent of
the
model of smartphone. To demonstrate internet-based information
sharing,
we here fabricated a biosensor system comprised of
a
biosensing cartridge for a food-borne pathogen (e.g., Vibrio parahaemolyticus
(V.
parahaemolyticus)),
CIS module, and Wi-Fi module
installed
in the circuit board. The system was controlled by a
smartphone
app
programmed by this research group. The internetof-things
(IoT)
technique intended for use in food contamination
monitoring
was
demonstrated by analyzing V. parahaemolyticus
present
on fish samples and uploading the data to a server via a
wireless
network.