KEYSHAWN JOHNSON, My Wedding Invitations ARE IPADS!!!

Imagine you receiving an iPad 4s instead of an invitation card for a wedding. Yes, thats what Keyshawn Johnson sent to friends as invitation to his wedding. 

Keyshawn Johnson just sent out the BEST wedding invitations ever -- iPad 4s -- each pre-programmed with all of the 411 for Key's big day ... TMZ Sports has learned.
It's pretty badass.
Here's what we know ... the iPads were sent to several guests a few weeks ago -- and once they're powered on, a program opens informing the recipients about Key's wedding events. 
Also included -- a photo gallery, guestbook, and countdown to the big day.
The couple also made it easy for guests to buy wedding gifts -- by including the registry right on the iPad. 
Of course, the woman Keyshawn is set to marry is Jennifer Conrad -- his longtime GF and the mother of 2 of his children. 
It'll be Key's second marriage. 
Congrats