How to Restrict Access Parse.com API to One Only Session Token (One Device) per Time?

Question

I'm developing an App that use Parse.com as a Backend :

• I Can Login from any device with the same PFUser in the same time
• I Can Change anything in One device and see the change immediately in the other device

In Small words, Everything works perfectly !

MY GOALS

1) Is it possible to Restrict the Login to Only 1 device Per Time ?

2) If Yes, How can i disconnect the Previous device when the New one login ?

Thanks