If someone unearthly is around you, the gadget will blink red and make a warning noise. Of course, it has not yet been tested on other unearthly beings like aliens. But I think aliens only go to America. Japan is just a place they blow up as an example.
It was not that it lacked size. It was bigger than all save the greatest of inter-stellar liners, but its shape was utterly alien. Most of its vast bulk was given over to tanks of some kind. The flight-deck was at the stern, over the engines: at the front was a colossal maw like nothing so much as a giant vacuum-cleaner. The streamlined star-drive was conspicuous by its absence. The whole great vessel was massively heatshielded, but charred black where the flames of a hundred suns had licked at its skin. Hunched in surpassing ugliness on its concrete pad, dwarfing the short-haul ferries which were the only other vessels on the apron that morning, it might have been a great brooding beetle.
Dak thought he had got to know the crew quite well. He thought of several of them as friends of a kind. Now they looked at him with the blank, guarded eyes of strangers. They saw him as something more than a stranger: an alien. Dak felt more conscious of his slanting eyes, of his yellow skin, than at any time since leaving home. He was sorry, because he thought their mistrust could bring them grief. He did not know it would also bring him grief. 076b4e4f54