at any restaurant tell the biometric thingy that "this is my first visit to the restaurant" The software verifies this, then you get a free lunch. A complimentary lunch is cheaper than coupon advertising, this also drives truth detection software

There is a patent on an IR imaging camera (Anbar), with algorithms that says it is capable of 99% accurate on multiple questions. Accurate truth detection benefits society.

Now, the private sector can amplify these truth technologies. I think I read that as a result of the efforts of advertising
BOGO coupons and the like recruit a completely new person to a restaurant at near $15 each. So verifying that a person is completely new to the restaurant without advertising is often cheaper than the meal.

Thus, at any restaurant a person happily tells the biometric thingy that "this is my first visit to the restaurant" The software and biometrics verifies this, then you get a free lunch.

Rsearcher M. Anbar digital thermography polygraphyhttp://www.google.com/patents/US5771261 " If, for instance, the t value for a set of 10 neutral and 10 relevant questions, presented at random, is larger than 3.24, then the level of significance pHR is smaller than 0.01, i.e., there is a over 99% probability that the subject is dishonest. If, taking the same example, the t value is smaller than 1.38 than pHR >0.2, i.e., there is a chance of more than 20% that by the criteria of this parameter the subject is truthful, i.e., there is too little statistical indication that the subject is dishonest." [beanangel, Oct 10 2016]

//it is capable of 99% accurate on multiple questions//

Free lunch if you sit for 2 hours answering questions or a 1 hour waterboarding session. The staff really get kicks out of that and will waive your bill.

I found the 99% accurate for a particular T value part, so, for every 100 extreme responders, 99 of them are at variance with the truth. individually although this ould vary, you could do mass screening of a population to find the 99 of 100 persons making statements at variance with the truth.

More optimistically, if you detect truth instead, you could find the 99 out of 100 people that are being truthful, a much more pleasant thing. Human resouces could use this to verify accuracy, rather than emphasizing naughtiness.