Iv'e never seen any TIMs that pass as I can usually clock them by just looking at their knees as males legs don't have that inward slant known as the Q angle, their bones are bigger too so again, if you look at their kneecaps they tend to be bigger. Their hands are usually a giveaway too as the tendons are much thicker and the size of them is larger, they also tend to have really short torsos compared to their limb length so their body proportions are very different to most women's as their arms and legs look almost too long for their bodies. Not to mention the hips are narrow especially when compared to the width of their waist and shoulders. TIFs have a slightly better chance at passing however you can usually see they have very delicate bones , especially when looking at their hands as they are often small as well as the wrists. They are often quite short too with some still having quite a curvy figure, the facial hair can sometimes be very thin and wispy and the facial features are quite soft and rounded.