This pen worked perfectly for about 3 weeks. Then he began to"not work". I can't say for sure if it's a connection error, an inability to actively provide feedback to the tablet, an inability to read the screen, etc. There is no indicator on USI pens without a power button or other physical button/indicator when the device is working. not only serves as a paperweight, therefore it is not possible to determine the type of error without destructively opening the pen. The stylus didn't work for about a week and suddenly started "writing" after I tapped the tablet screen about a dozen times. Then it stopped working at all. My guess is that these devices are prone to internal failure due to poor circuit wiring OR are susceptible to magnetic damage in one way or another - most tablets have magnets to hold the case/keyboard in place. Whatever the case, judging by Revain's reviews, this is clearly a common problem and Penoval should fix it. I highly doubt they care. I'll be happy to update my review if I'm wrong.
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