How to Detect the Decaf Scamsters

For people vigilant about their caffeine intake comes a new product that can test their decafs on the go. The D+caf test strips from Silver Lake Research Corporation out of Monrovia, California, can tell whether a six ounce cup of joe has more than 20mg of caffeine.
Some notes from the product page:

D+caf™ Test Strips enable you to test the caffeine concentration of coffee and tea.

20 single-use test strips

98% accurate for detecting “NON-DECAFFEINATED” beverages – above 20 mg caffeine per 6 oz. serving

D+caf™ is a lateral flow immunoassay, similar to the technology used in home pregnancy tests

D+caf™ Test Strips can be used on hot or cold beverages

Produces a result in as little as 30 seconds

Test beverage before adding milk, cream, powdered creamers, syrups or other additives

Product page: Caffeine Test Strips …
(hat tip: MIT Tech Review)