Macbook acting as a holster

Hello Crackberry!
I was wondering if it's normal for my BB10 devices to lock, as if they were put in a holster when I place them to the left of my Mac touchpad?
I am sorry if this question was already asked, but I couldn't find an answer on the forums. Thank you in advance for the reply.

Your Mac Book has a magnetic latch which is most likely the culprit. It is causing the sleeper function of your BlackBerry to engage, which is triggered by a magnet in your case usually. ;)