Monthly Archives: October 2015

New fingerprinting tech is more than skin-deep

prototype FF-OCT fingerprint scanner image

Most fingerprint scanners work the same way – the pad of the finger is pressed against the scanner’s glass surface, light is shone through the glass onto it, and the light that’s reflected back by the minuscule valleys between the print’s ridges is used to create an image of the print. It’s a system that’s usually effective, although it can fail to read prints that have been flattened by age or damaged, plus it can be fooled by gelatine casts of fingerprints. That’s why scientists from the Paris-based Langevin Institute have developed a more reliable scanner, that looks below the skin’s surface.

Created by postdoctoral researcher Egidijus Auksorius and Prof. Claude Boccara, the scanner utilizes a technique known as optical coherence tomography (OCT). This is already used in medical imaging, and involves analyzing the interference pattern that occurs when two beams of light are combined – one of those beams serves as a reference, while the other is shone through a biological sample.

In this way, the scanner can image the “internal fingerprint” located about half a millimeter below the surface of the skin, which has a pattern identical to that on the outside – except it’s unscathed.

Images acquired using the new technology, which also images sweat ducts image

Images acquired using the new technology, which also images sweat ducts

While existing OCT machines are relatively big and expensive, the scientists are using a more compact version of the technology called full-field OCT (FF-OCT). As a result, their scanner is currently about the size of a shoebox, although they’re working on making it smaller, faster-operating and able to scan deeper. Its most expensive component is a US$40,000 specialized infrared camera, although they’ve recently had success using a camera worth about one-fifth as much.

Ultimately, they hope to produce a finished product that could be made for just under $10,000. This means that it won’t likely be finding its way into consumer products anytime soon, but would instead be utilized in settings where security is particularly important. That said, scientists at the University of California, Davis and Berkeley are working on an ultrasound-based 3D fingerprint reader that could replace capacitive scanners on mobile devices.

Plans call for the Langevin device to be field-tested on 100 individuals, in Turkey. A paper on the research was recently published in the journal Biomedical Optics Express.

Source: The Optical Society


Henry Sapiecha


1…World’s Scariest Police Shootouts Crime Documentary Videos

2…Published on Feb 27, 2014

WARNING: gun violence. World’s Scariest Police Shootouts – Crime Documentary

Most daring, dangerous, wildest, and shocking videos of police and criminal shootouts ever caught on tape.


3…Police helicopter video shows dramatic highway shoot-out


4…Drug addict shot dead in police hostage situation in China


5…Published on Jan 14, 2014

DENVER — Raw video from the Denver officer-involved shooting. In the video, an unidentified man takes a woman and uses her as a shield while police yell for the man to surrender.
WARNING: This video may not be appropriate for some viewers.
As the man tries to take the woman back inside the store, an officer opens fire hitting the man. He falls to the ground, the hostage runs away and officers swarm the area.
The man was taken to Denver Health Medical Center for treatment and was listed in critical condition Monday afternoon.
(DenverChannel) DENVER – Denver Police have identified the suspect who allegedly took hostages inside a 7-Eleven Monday. Police said 34-year-old Blas Leroux was shot in the shoulder as he tried to use one of the hostages as a human shield.
The standoff began at 8:30 a.m., after witnesses saw the suspect running from police.
“He dropped his coat,” said Dino Gallegos, who was exiting the store as Leroux ran in, “and the officer picked it up. The suspect ran around the corner and into 7-Eleven.”
Police Chief Robert White said negotiators tried for nearly an hour to get him to surrender. He refused and instead used one of the three hostages as a shield in an attempt to escape.
“The officers demanded that he let her go, at which time he attempted to pull her back into the store,” White said. “So out of fear for her safety, one of the officers fired a shot striking the individual.”
Leroux was taken to a nearby hospital with a gunshot wound to the shoulder. The hostage was not injured.
A Colorado Bureau of Investigation report shows Leroux has used several other names. He has a lengthy criminal record including convictions for trespass, motor vehicle theft, assault, burglary, child abuse, escape and harassment.




7…Wild Police Chase – South Los Angeles, CA – April 30, 2013

Published on Apr 30, 2013

Police chase a stolen van in South Los Angeles, California. The suspect crashes into a multiple cars during the dangerous pursuit including a LAPD patrol car. The suspect jumps out and runs after spike strips disable the white cargo van.



8…Officers Shoot & Kill Suspect on LIVE TV! Phoenix Car Chase (23 October 2014) KTVK

Published on Oct 26, 2014

**Exclusive YouTube/wwwy2000 video** | Associated Press –
Police in a Phoenix suburb fatally shot a machete-wielding man Thursday after he rammed a patrol car in a stolen truck, injuring an officer.

Avondale police said the man was shot after he refused to drop the machete and a pocket knife.

Authorities identified the man as Jeremy Bustos, 43, and said he was rushed to a hospital along with an Avondale police officer who was injured in the collision.

The officer’s name hasn’t been released, but Avondale police Sgt. Brandon Busse said the officer was in stable condition and improving at a hospital with non-life threatening injuries.

Witnesses said the suspect was shot at least twice and helicopter news video showed him falling to the ground before he was taken to a trauma center.

Busse said the spree started when a man assaulted a city maintenance worker on the side of a roadway and stole his city truck about 9 a.m. The man took the truck on a joyride as police pursued before officers got a helicopter to track the stolen vehicle and backed off, authorities said.

Police began a pursuit and used tire-puncturing devices and the chase ended with the truck ramming the police car.

Officers confronted the suspect, who refused their commands and advanced toward them with a machete and pocket knife and was shot, according to Busse.

Avondale Fire Department crews extricated the police officer from his vehicle and he was airlifted to a Phoenix hospital.


9…PCH DUI Chase Suspect Dances, Confronts Officers

Published on Apr 16, 2013

More Police Chase Videos from ABC7:

A DUI suspect leads CHP officers on a chase on the Pacific Coast Highway on April 16, 2013, before resisting arrest. As the chase ends on the PCH, the suspect gets out of his vehicle, dances and then walks right up to armed officers, forcing police to take action in a nail-biting scene that ends in his arrest.

10…BEST OF Police and FAIL

Published on Dec 16, 2014

Compilation : video BEST OF the best Police and epic FAIL / crash.


11…Best COP CHASES Compilation – Police VS Street Racers – CHASES GONE WILD

Published on Mar 9, 2015

Best COP CHASES Compilation – Police VS Street Racers – CHASES GONE WILD Enjoy! 🙂
Moto Chases – Cops VS Racers Best Compilation!

Henry Sapiecha



Sweet Revenge for Australian scientist Kang Liang after burglary at his residence

Dr Liang's method the prints glow under UV-light and different colours can be achieved by altering the chemistry. CSIRO image

Glowing fingerprints are the future

Using Dr Liang’s method the prints glow under UV-light and different colours can be achieved by altering the chemistry. Photo: CSIRO

After CSIRO scientist Dr Kang Liang’s house was broken into, he developed a new fingerprinting technique to catch the bad guys.Vision: CSIRO.

It’s a storyline straight out of CSI Australia.

A young scientist has his home broken into but police can’t find any fingerprints at the scene.

Rather than give up in despair, Dr Kang Liang uses his awesome science powers to develop a new technique that will allow forensics to better capture fingerprints and make them glow at the scene of the crime.

Dr Kang Liang of CSIRO image

Dr Kang Liang of CSIRO. Photo: Eddie Jim

And while it’s too late to solve his case, by spurring on the CSIRO scientist, the foolish burglar probably did a grave disservice to criminals everywhere.

Materials scientist Dr Liang is now savouring the sweet taste of revenge.

His research, published in the journal Materials Science this week, will allow for forensic police to “dust” for prints using a drop of liquid containing luminescent crystals. Applied to fingerprints, the crystals create a greater contrast between the mark left by a criminal and the surface enabling higher resolution images to be taken for easier and more precise analyses.

The crystals attach themselves to the proteins and peptides of the fingerprint residue and glow under ultraviolet light, making detection even easier.

“While police and forensics experts use a range of different techniques, sometimes in complex cases evidence needs to be sent off to a lab where heat and vacuum treatment is applied,” Dr Liang said.

“Our method reduces these steps, and because it’s done on the spot, a digital device could be used at the scene to capture images of the glowing prints to run through the database in real time.”

“When my house was broken into, and knowing that dusting has been around for a long time, I was inspired to see how new innovative materials could be applied to create even better results,” Dr Liang said.

“As far as we know, it’s the first time that these extremely porous metal organic framework crystals have been researched for forensics.”

The CSIRO is now looking to partner with police forces around the country (8)

Henry Sapiecha