| 摘要 |
A dispensing system with an electronic keying mechanism, the dispensing system including a housing (70) and a refill unit (57). The refill unit (57) includes a product reservoir, a pump mechanism and a collar adapted to secure the refill unit (57) within the housing (70). An infrared sensor (78) is provided in the housing (70) and includes an infrared radiation source and a detector. A taggant is dispersed within at least a portion of the collar, the taggant being detectable by the detector when exposed to infrared radiation.
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