You can log out of your Kobo Reader account give the Kobo to your brother so he can log into his account on the Kobo reader then sync the reader with Kobo account to load his books. Could let him read books on your reader while it is still set to you account and trust that he will not buy books on your account to read. I trust that brother is reading free books on your reader because your bought e-books are sold to you for only your reading pleasure. Might be legal to read out loud your book to your brother only or is that a public performance?
|