Re: 3M CD Security

Lori Stevens (
Wed, 22 Sep 1999 14:48:03 -0700 (PDT)

We have had them on our 12,000 + public library cd collection for about 8 years. They seem to be doing fine. We switched a few years back to a parallel strip that is thinner. It seemed the larger single strips affected the balance of the disc when playing higher quality machines.

As far as DVD goes, you can not routinely strip the disc because 3/4 of your collection is going to be read on both sides. Many titles include a pan and scan version and a letterbox version. One is on one side of the disc the other is on the flip. A good rule of thumb is if there is printing on the disc itself you can strip that side. We stripped the case and hoped for the best. We haven't lost any to theft yet but have only been circulating them for about 8 months.

Hope this helps!

Lori Stevens
UVSC Library ext.7421

>>> "David Horvath" <> 09/22/99 01:55PM >>>
We've had the discussion about using 3M security strips (DCD-2) on CDs. so I know the usual arguments for and against. Is there anything new about their use anyone can add? Long term effects? Interference with playing? I wonder if they will work on DVDs? One of the biggest problems seems to be the cost. You can respond directly to me. Thanks.

David Horvath
Ekstom Library
Media and Periodicals