ANSWER:
The only way for you to find a place are police department, government or federal building, but if you want to know if a person is lying to you, common sense, go to a drug store where they have a machine that get a pulse of your heart. All you need is let that person put his or her hand in the machine then ask a question and you will see the machine beating faster if the person is lying, beating normal is the person is not. It takes a dollar to do them.
Take a lie detector test .
Yes.
Depends on what it's for...
Yes. But lie detector evidence is usually not enough. Also you can not be forced to take one.
take a lie detector test
Lie detector tests are not 100% accurate and although given by law they are not admissibly in a court of law and using a lie detector is not used for public use; therefore it would not make any point for your wife to take a lie detector test. Hypothetically, if your wife did cheat she would probably decline taking the test.
A court can order you to take one, yes.
If you are not guilty or you know how to beat a lie detector then yes.ADDED: (in the US) The results of such a test are NOT admissibile in court - however - the police CAN use them to assist in conducting their investigations.
then your not lying ...
by telling the truth
Indeed it can
Someone that performs a lie detector test