Once, twice and again!
She'd had to read about it in textbooks -- how vulnerable coda's high-tech walkers were to being overwhelmed by lightly armed soldiers. how close they'd been to annihilation, without the protective cover of their legendary air support.
Zippy Zipperdale: Moderately Mad Scientist-The Twelfth Experiment
At madam petri's she would have expected something more high tech like a finger print reader or something. they all crept up to the door, and krystal produced her phone, punching an app on the front.