LSAC announced changes to its LSAT administration rules. The new rules can be found also in 2007–2008 LSAT & LSDAS Information Book. The text below is from the LSAC web site. 

Some of the most significant changes are listed below:

• Items permitted in the test room. Tests takers may bring into the room only a clear plastic ziplock bag, maximum size one gallon (3.79 liter), which must be stored under the chair and may be accessed only during the break. The ziplock bag may contain only the following items: LSAT Admission Ticket stub; valid ID; wallet; keys; hygiene products; #2 or HB pencils, highlighter, erasers, pencil sharpener (no mechanical pencils); tissues; beverage in plastic container or juice box (20 oz./591 ml maximum size) and snack for break only.
   
• Items permitted on the desktop. Test takers may only have tissues, ID, pencils, erasers, pencil sharpener, highlighter, and analog (nondigital) wristwatch. No electronic timing devices are permitted. This is a change from previous testing years.
   
• Prohibited items. Candidates are not permitted to bring into the test center the following items: weapons or firearms, ear plugs, books, backpacks, handbags, papers of any kind, calculators, rulers, timers, listening devices, cellular phones, recording or photographic devices, pagers, beepers, headsets, and/or other electronic devices. Bringing prohibited items into the test room may result in the confiscation of such items by the test supervisor, a warning, dismissal from the test center, and/or cancellation of a test score by LSAC. Prohibited items may not be used during the break. LSAC and LSAT testing staff are not responsible for test takers’ belongings.
   
• Hats/hoods. No hats or hoods are allowed (except items of religious apparel).
   
• Handbags, backpacks, briefcases. No handbags, backpacks, briefcases or other bags—except the ziplock bag described above—are allowed in the test room.
   
• Cancellation/Complaint deadlines. Test taker complaints and cancellation requests must be received at LSAC within six (6) days of the test date. (This is a change from previous years.)