The iPad is a wonderful device, but like your PC, it can contain quick access to information you may not want everyone to see. Or you don't want children in your house to gain Internet access through your iPad. For all these reasons, it would be a good idea if you know how to lock iPad.
Besides, a passcode can stop strangers from viewing your info if you unfortunately lose your iPad or it gets stolen. Read this article to learn how to lock iPad before and after iPad is lost or stolen.
If your iPad hasn't got a password, follow the simple steps below to set a passcode and lock iPad.
For most users the default 4-digit passcode should be OK. If you are more worried about losing your iPad or having it stolen, you can use an alphanumeric password. You can choose an alphanumeric password by turning off the Simple Passcode option.
You can prevent someone from using your lost iOS device or Mac by remotely locking the device with a passcode -- a number that must be entered before the device can be used. To do this on iPad, you must enable Find My iPhone on iPad first: Go to Setting > iCloud > Find My iPhone. Then turn on the Find My iPhone option.
Suppose your iPad is stolen, the following steps show you how to lock iPad remotely.
The Find My iPhone app allows you to do more than locking iPad remotely. You can check the post How to Use Find My iPhoneto get more details including how to ring an alarm and track the location of lost iDevice.