It's a very good question. Miles thinks it through. Not antigrav - not suspicious to Marilacan Security and their scanners - not dangerous to anyone who isn't wearing steel under their clothes.

"I think it was some sort of electro-hysteresis effect. The colour changes in the display are apparently driven by a reversing magnetic field at low level. No problem for most people. For me, well, it wasn't quite as bad as shoving my leg braces into a microwave, but—you get the idea."

He gets to his feet, producing a nice big grin from somewhere along the way, and staggers Ivanward. "Get me out of here," he mutters from as close a range as possible, trying to control his shivers.