1) Bluetooth synchronization: As explained in Section II-A the two mobiles are synchronized through Bluetooth. Synchronization in time is essential to obtain appropriate S1 peak for the corresponding video of systolic pulse data. To estimate the performance of the Bluetooth synchronization protocol, we assumed that the one-way network delay is the same on both sides, i.e., the time taken for a message from a master to a slave is the same as that from a slave to the master. A small test for the effectiveness of the synchronization process was done. Because it was hard to have a centralized time for