Two corrections should be made to the report on "Security Products for Libraries: Policy Concerns and a Survey of Available Products" which was published in the May/June 1999 issue of Library Technology Reports. Checkpoint, which claims to be the sole supplier of RF labels to Keytec Security Systems, has informed us that its labels cannot be sensitized and desensitized as reported. The Keytec distributor from whom we obtained the information has not responded to a recent inquiry.
The other concerns the compatibility of the electromagnetic tape targets of various vendors. In the report, it was stated that those of 3M, ID Systems, Knogo, and Sensormatic are compatible with one another, which is correct. Checkpoint targets are now manufactured under license from Allied Signal, the same company which holds the patents for the labels offered by the other vendors and therefore are also compatible with those of the other four companies listed above.