|Invented by||Possibly Hubert J. Farnsworth|
|Purpose of invention||To determine who is homosexual|
|First appearance||Love's Labours Lost In Space|
A gaydar is a small hand-held device similar to a radar. It is used to determine whether someone is homosexual or not. It is known for its questionably high success rate. It is, however, susceptible to interference from gay weather balloons and is flawed because it deems everyone "gay". It is one of the many gadgets which Bender carries around with him everywhere.