But although such tools have worked under certain circumstances, most can be fooled with enough preparation, and none are considered reliable enough to even be admissible in court.
Tapi meskipun alat-alat tersebut berfungsi di kondisi tertentu kebanyakan dapat diakali dengan persiapan yang cukup dan tak satu pun yang dianggap cukup dapat dipercaya untuk bisa diterima di pengadilan.