For data acquisition, the user had to touch the ID card that
launched the J2ME application automatically and authenticated
the user. A voice sounded and asked the user to bring the mobile
phone close to the extended blood pressure meter right next to
the meter’s display. This action triggered the Bluetooth setup
process. At the same time, the user was asked to put on the cuff
of the blood pressure meter and to touch the ECG electrodes
with her/his fingertips.
After 10 s, the blood pressure measurement and ECG recording
started automatically. ECG data were transmitted to the
mobile phone in real time to be displayed. As soon as the
blood pressure measurement had finished, ECG streaming was
stopped. If the blood pressure meter was not able to provide a
valid measurement, the ECG recording stopped automatically
after 90 s. Finally, the user had to acquire further health parameters
by touching the NFC-enabled body weight scales and the
icon table. Once all information was acquired, the application
transmitted the data and terminated automatically.