Exhibit 23 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No.'s 333-33580, 333-349299, and 333-34867 of Sentry Technology Corporation on Form S-8 of our report dated March 27, 2001 appearing in this Annual Report on Form 10-K of Sentry Technology Corporation for the year ended December 31, 2000. /s/ DELOITTE & TOUCHE LLP Jericho, New York March 27, 2001