21.   One blue line appears in a test window if the result is positive, and another appears in a verification window to show that the device worked properly.

22.   Palm is claiming the device will work for up to two weeks between recharges, depending on how bright the screen is.

23.   Other devices work less well.

24.   Since they fixed the problem, the device has worked like a charm.

25.   That would allow the devices to work in formation to zero in on environmental problems, such as a temperature spike or a leak.

26.   That this marginally absurd device actually works says more about the clarity of the Bonaventure than the cleverness of the invention.

27.   The company Wednesday demonstrated how the device worked to a group of visitors.

28.   The companies will also train personnel to use and maintain the systems and test how well the devices work.

29.   The device works by delivering a series of electrical shocks to a spaghetti-sized nerve in the neck, known as the vagus nerve.

30.   The digital is ephemeral, historically speaking, because the devices may not work in the future and the data will degrade, some quite quickly.