@Conrad13 I thought it was worth mentioning that the reason you have to claim and unclaimed devices is to stop device theft. Now it won't stop someone physically taking the hardware but it at least stop them from using it.
If your friend can un-claim the device from their Org as has been mentioned then you should be able to claim it in your however you will need to purchase a license for the access point as all devices need to be licensed to work. Meraki isn't consumer grade hardware so requires a license
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