|
True, for Kindle.
For Adobe DRM you can read your backups on any device you have registered with Adobe Digital Editions (Sony, Kobo, Pocketbook, etc).
For eReader and others where you use your credit card (does that include B&N's Adobe implementation? - I'm from the UK) you need that number.
For secure Mobipocket, if it's still used, you need the registration number from the reading software on your device, which you then log to register the device with each store - and moving backups between devices with that is a pain - you need to download again if you've added a new device in the meantime.
With Apple's iBooks your books are backed up to the iTunes library of any computer with which you synchronise, but can't be transferred between iTunes accounts.
Graham
|