The ForensiKit: Fingerprinting with Ink box includes
- Three disposable ink strips – large
- Thirty disposable ink strips – small
- Twenty-five FD258 fingerprint cards
- Two Child Identification fingerprint cards
- Five fingerprinting retabs
- One FX Magnifier Linen Tester
- Five latex balloons
- One activity insert (Download another copy [PDF])
- One packing list (Download another copy [PDF])
No subscription required
Tips for rolling fingerprints
- Clean the person’s hands with soap and water before applying the ink or scanning.
- If the hands are damp, wipe the fingers with rubbing alcohol.
- If the hands are dry or flaky, moisturize with a small amount of hand lotion and wipe off any excess.
- Make sure the person is standing comfortably and their forearms are parallel with the floor.
- Tell the person to look away, relax, and not try to help the rolling process.
Rolling the prints
- With your right hand, hold the person’s right hand at the base of the thumb. Cup your hand over the person’s fingers and tuck under the fingers not being printed.
- Guide the finger being printed with your left hand.
- Roll the finger on the ink to cover the whole fingerprint area. Ink should cover
- from one edge of the nail to the other.
- from the crease of the first joint to the tip of the finger.
- Roll the inked finger on the card. Start from one edge of the finger and roll all the way to the other edge.
- Do not press down. The weight of the finger is enough pressure to record the print.
- Roll fingers away from the center of the body.
- Roll thumb toward the center of the body.
- Lift the finger up after rolling to avoid smudging the print
Tips for analyzing fingerprints
Now that you have your prints, you need to try to identify them.
💡 Tip: Create a sheet with 4 columns and label: loop, whorl, arch, and individual features. Use this to record your observations.
- Determine which of the three categories the print falls under—loop, whorl, or arch. This is the primary way of classifying a print, initially.
- loop = leans to the right or left
- whorl = swirling pattern
- arch = “hill” shaped
- Identify the ridge characteristics in the print.
- Bifurcations or forks
- Ending ridges
- Enclosures or islands
- Spurs or hooks
- Double bifurcation
For more information, see the Fingerprint Training Manual from the FBI
Need more fingerprint cards?
FD-258 Fingerprint Cards, Applicant
Need more ink strips?
Ink Foil Strips
Want to level up?
Tread Print Kit