Manual Attendance System Changed To Biometrical System

Sir
we are planning to change the manual attendance system to biometrical system.So management informed me to inform this to all employee
so kindly help me to write a notice to all employees regarding the same

Kindly let me know to write a letter to all employees stating that next month on wards no need of manual attendance they must follow bio metrical system by swiping their finger. if anyone fail to do that will be treated as absent on that case. So that i want to inform all employee to strictly follow this with out any fail. Actually my concern is to write an official notice to all employees regarding the same
kindly help me out