ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

What is Latent Fingerprint Detection?

Updated on May 22, 2009

Latent fingerprints are marks from a person’s finger that are not visible to the naked eye. Forensic investigators often use special equipment or substances to make latent fingerprints visible. One of the most common is fingerprint powder. A person’s hands and feet always have a fine film of oil, sweat, and other compounds on their surface.

Whatever a person touches bears traces of these substances, which creates a fingerprint that reflects the small ridge lines of the finger. When fingerprint powder is sprinkled over an affected area, the powder adheres to the oil, sweat, or other materials left in a fingerprint. This makes the fingerprint become visible. Forensic scientists and law enforcement can then collect information about the fingerprint that can help them identify the person who left it.

Fingerprints in Crime Scene Investigation

After crime scene investigators photograph the scene, they dust all surfaces with fingerprint powder. This ensures that they do not miss any potential evidence. When fingerprints are found, they are photographed, transferred to clear tape, and placed on a fingerprint card.

After fingerprints are recovered from a crime scene, they are then scanned into a criminal database to determine a possible match, and kept on file for future matches. In the United States’s national database for fingerprints is the Integrated Automatic Fingerprint Identification System (IAFIS). This system holds over 47 million fingerprint records and can match any fingerprint entered into it with any existing fingerprint in the database. Criminals are often fingerprinted to establish these records, and citizens may be fingerprinted in routine background checks.

Latent fingerprint examination is often an important part of crime scene investigations. Often a criminal will touch surfaces of the crime scene with his or her bare hand, leaving the tell-tale fingerprint. Since each person has a unique fingerprint, investigators can match latent fingerprints found at the crime scene with a person in law enforcement databases to find the person responsible for the crime.

Sometimes fingerprints can be left not only from the natural oils and sweat of a person’s hand, but also from other substances that were present at the crime scene. This can include blood, other bodily fluids, or a foreign substance. When this is the case, the fingerprint can indicate both the person responsible for the crime and what physical substances were present.

working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://corp.maven.io/privacy-policy

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
ClickscoThis is a data management platform studying reader behavior (Privacy Policy)