Withholding the certificates of an employee is illegal. You can ask them to submit their original govt id proof and have their place of stay verified by a team, whether they stay in a rented place or they or their parents own the house. Also get their signature on the company letter head stating they have taken the company owned property for official purpose.
Please do include the technical specification of the tab, model, make, item code, etc. in the letterhead. By doing this the employee will not easily plan to abscond from the company with the company owned property. If he/she does then you should tag him/her "Dare Devil" :)
7th October 2016 From India, Bangalore
Thank you so much for your great suggestion. It helps me a lot to manage this situation. But now a days its very easy to make a new address proof , any one can run away from the company by submitting their Id /Address proof also and later on he/she can make a new proof. Can I take a Cheque in this situation.
10th October 2016 From India, Bhubaneswar