Or it can only work in lukso?
it is a service like gmail or such. Because it relays transactions, it is the one which pays gas. Gas on ethereum is super high for now. Also it is safer to use universal profiles with relay services because of key manager and permission model they enable. Such as on ethereum (raw wallet) one needs to hold private key to sign any transactions, which is dangerous as we saw so many of hacks of nfts and etc recently.
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