I left my IPad at someone's house. Can I set a lock on it from laptop or iphone?
You can actually using "lock mode". It only works if you have turned icloud on on the Ipad and if the Ipad is on your account.Go to www.icloud.com and enter your details then click on "find my iphone" and go on from there.
No I am sorry but if you dont no how to lock it on the ipad comment and I can tell.
You can if you have "Find My iPad" set up. if you have the app, you can do it right from another apple device (iPod touch, iMac, iPhone, tablet.) Good luck!