Abstract: The method and system for reminding readers of fatigue in reading while using electronic devices are revealed. First use a reading speed calculation module to detect user's reading speed within a period of time when the user is using an electronic with a display to read. The reading speed is related to pages being turned or the amount of words being read. Then a fatigue-in-reading reminder module is activated by the reading speed calculation module when the user's reading speed falls within a specific range so as to remind the user by pop-up windows, sounds, flash light or vibration at the proper time and provide the user certain corresponding measures he/she should take. Thereby there is no need to use additional equipment for preventing users from becoming more fatigue and healthy vision is accomplished at lower cost with higher efficiency.

Abstract: The invention relates to a system and a method for using a trusted device to browse e-books. The system comprises an author end, a user end, an electronic bookstore unit, and a data storage unit. In the cloud system, an e-book author can set the authorization mechanism about e-book sale and downloading to protect their copyrights and to upload the e-book by the electronic bookstore unit. The user also can browse e-books by assigned electronic apparatuses to protect purchase rights from being illegally copied. The e-book is an encrypted file, so the user has to use the identification code of the certified electronic apparatus as a decrypted key to decrypt the e-book file for reading.

Abstract: The method and system for reminding readers of fatigue in reading while using electronic devices are revealed. First use a reading speed calculation module to detect user's reading speed within a period of time when the user is using an electronic with a display to read. The reading speed is related to pages being turned or the amount of words being read. Then a fatigue-in-reading reminder module is activated by the reading speed calculation module when the user's reading speed falls within a specific range so as to remind the user by pop-up windows, sounds, flash light or vibration at the proper time and provide the user certain corresponding measures he/she should take. Thereby there is no need to use additional equipment for preventing users from becoming more fatigue and healthy vision is accomplished at lower cost with higher efficiency.