Open to any Jack.
High up on one of the city buildings, John was laid out on the ledge, so that his head dropped back over it. He kinda' liked the city better this way up. His wriststrap beeped insistantly, telling him that the blanket hologram invite he'd sent out to 'Jack' to come and see him had been picked up and read by someone.
"Alright, alright," he murmured to himself. "So you work then. Good." He swung his arm up in front of his head, and pressed a few buttons. The beeping ceased. "Well, well. At least one of them has got it." He sniffed loudly, and settled back, whistling tunelessly to himself, waiting patiently to see whether anyone would show up.