Bought used, need to deactivate previous owner

It is called Google FRP and it is the details that you put into access the Google Play Store. It also there to stop theft. Just log in with your Google Account or the account of the person that bought it.

You have to be signed in with the "owner" account of the phone (the one you used to set it up) in order to factory reset it. That means if you give me your phone or Tablet, I can't reset it without you being signed in. There are random workarounds on the Internet, but they tend to get patched almost as soon as they are discovered. You'll pretty much need to know the login details for the last account to use the phone before you can reset it and create a new owner account.

Videos here

https://www.google.com/search?q=Polaroid+Tablet++Bypass+Google+FRP

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You will need to contact Apple and they will need the previous owner to unlock deregister it as well

You don't need a computer to unlock the device, but if you bought it used and there is an activation lock on it, then you need to take it back and get a different device or make them get the previous owners credentials to unlock it,

Did you bought it second hand? Should ask previous owner. If not available, you can try this link:

http://www.toughbookrescue.com/instructions.html

You can try this: Go to Settings. Under Settings, scroll down to General. Click on that. Under General, scroll down to Reset. Click on that. That will open several lines of choices. The second one is "Erase all content and settings" - however, I have not ever tried this, so it's possible you will need the previous owner's Apple ID and password to complete this step. I would suspect you will, because Apple is very serious about security. So you may need to either contact the owner and get the ID and password, or your other option, as you said, is factory reset, which may be your only way out.

Even if you restore the device to factory settings and clear the previous owners settings, images etc from the device the device will still have the same serial number which apple or the previous owner may be able to trace when the device goes to register online (something it will need to do to access the itunes store).

There are also apps which allow owners of stolen devices to take a photo of whomever is holding their device which they can then bring to the police along with the GPS location settings showing where the device is.

Of course, if the previous owner had the device set up to upload images to their cloud account images you have taken of you, your friends and surroundings may already be in their possession......

Woman says photos of iPhone thiefs family showing up on her iCloud

Questions: if the device is indeed stolen,

1 - do you really want to answer to the police why you are in possession of a stolen device?

2- if it was your ipad that had been stolen, wouldn't you appreciate someone helping you get it back?

Have a Magical Day

K

Try a factory reset.

Guessing you can connect to wifi

If you bought it on your Amazon account it is already registered.

If you are registering for the first time then you just use your normal email and password you use for Amazon every day.

If you have bought a second hand Kindle then the previous owner needs to de-register it. If they have not done it then you may need to log into the amazon site on your pc, call their help desk and give them the FIre serial number. They should be able to force a re-set assuming it has not been lost/stolen, in which case they may have locked it and you have a paperweight :(

You'll need to do a factory reset before you can use it.
http://support.apple.com/kb/ht1808