Let someone use ipad without accessing id
I want to let my 90yo MIL use my old ipad so the kids can facetime with her. However, I don't want the older grandkids who may play around on the ipad while visiting to be able to access my information. I thought I could create her own user ID, but learned there is only one user allowed per device. Is there any way to make this happen?
iPad, iOS 8.1.3