50% accurate telepathy

Not like „you can only read 50% of a persons mind“ but more like you can only read 50% of their information. For example if you try to guess a person’s name, let’s just say their name is John, you can only read the „Jo“ part and the rest you have to figure out by yourself. Or let’s just say you’re trying to get a 4 digit code out of a person mind, but you’re only able to guess the first or last 2 digits