There is neither mobile nor computer inside the examination hall. But that is the place where communication happens in fraction of nanosecond that too by telepathy. A student thinks in his mind... "my friend should turn and see me..... My friend should turn and see me....... My friend should turn and see me......... And Lo...... The friend turns..... Within fraction of nanosecond........ The transmitter and receiver completes the communication....... Making the invigilator dumb. Long succeeding exam malpractices..... Without technology.
