Figure 6.50. A pen, a microchip, and a wristband minimize the chances of wrong-site surgery.
Source: Copyright © CheckSite Medical, Inc. Used by permission.
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Figure 6.51. A narrow strip of magnetic material, accompanied by exit door sensors, helps deter library thefts
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Figure 6.52. Exit door sensors in a library
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Figure 6.53. The metallic layer desensitizes books so they can be removed from the library without setting off an alarm
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Figure 6.54. The sensor strip can stop a shoplifter
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