The first machine MINI AFIS 2. Collection latent fingerprints on the surface uneven and curved surfaces, apply textures to 2.1 researching share a channel size. Labeling to tell you what that is before impressions latent fingerprints, clean the surface thoroughly study the 2.2-inch press straight into the hands of volunteers. On the surface used in the research. The regular force The volunteer must not exert any pressure, then pulled up vertically to prevent. Destroy latent fingerprints have stamped. Beginning with the right thumb, index finger, right middle finger, right thumb and left index finger, the middle finger on the left in order to divide them and labeling already collected 2.3 of latent fingerprints. The following methods Method A dust magnet. The magnetic powder dust on the latent fingerprints. The latent fingerprints appear. Then, cut the tape to size and mounted on latent fingerprints. Then peel tape with latent fingerprints stuck up. Mounted on paper forms to collect latent fingerprints.