Cellphone use is discouraged at work. This software is available for trial before purchase and it does not use any hardware device that suffers from wear & tear or physical loss. Over the decade, good number of measures have been taken at this end to ensure that the customers have no reason to call us post-purchase. We intend to continue with our efforts in this direction and keep the cellphone consistently out of reach of work. Thank you in advance for your kind co-operation.