Losing track of your own phone number is disconcerting. It’s also something that happens frequently enough. Human memory is imperfect anyway. Making it an issue for just about everybody at some point.

How many people and companies have your phone number if you had to guess? Maybe a hundred? Think again. Want to be shocked? Your cellphone and landline number (if you still have one) are probably ...

Nida is a tech and telecom journalist with more than five years of writing experience. She graduated from the University of Toronto with a BA in journalism. Your phone number is likely an essential ...