A blonde accident

A few professor colleagues were standing in the tea kitchen. Suddenly a blonde in a bright yellow bikini entered the room!

She quickly reaches into her panties and pulls out a Uni-ID card that says Prof. Walter Schmidt.
"Well, what do you say?" she asks in Walter's voice.
The colleagues looked at each other in confusion. "Walter, is that you? How did you do it?".
Then Walter explained the iBod to his colleagues. Also, instead of projecting a hologram into free space, the device placed it around the target's body and thus disguised it, as it were.
They listened spellbound to Walter's explanations. Curiously, he let his gaze wander over the people at the end.
Olaf, another colleague, suddenly said "I'm just around the corner!" and left the room.