physics

IDENT1

IDENT1 is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IDENT1 rather than just read about it. In short: IDENT1 is the United Kingdom's central national database for holding, searching and comparing biometric information on those who come into contact with the police as detainees after being arrested. Information held includes fingerprints, palm prints and scene of crime marks.

Key takeaways

IDENT1 belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IDENT1 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IDENT1 from memory before moving on to harder problems.

Reference excerpt

IDENT1 is the United Kingdom's central national database for holding, searching and comparing biometric information on those who come into contact with the police as detainees after being arrested. Information held includes fingerprints, palm prints and scene of crime marks. It replaced the old system known as the National Automated Fingerprint Identification System (NAFIS), and works in partnership with Livescan technology. According to the National Policing Improvement Agency, IDENT1 currently contains the fingerprints of 7.1 million people and makes 85,000 matches with data recovered from crime scenes per year. Verified over 1.5 Million arrestee identifications per year. Checks more than 2,000 identities from Lantern mobile devices per month. Checks 40,000 identities per week for UK Visas and Immigration. IDENT1 was developed by US defence company Northrop Grumman, who were awarded the £122m contract in December 2004. The deal was expected to last for eight years, with an additional three "option" years.

See also United Kingdom National DNA Database

References

Worked examples

Example 1 — a first encounter with IDENT1

Start with the simplest possible case. Write down what IDENT1 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IDENT1 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IDENT1 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IDENT1

In research: IDENT1 appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses IDENT1 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: IDENT1 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biometric databases, Fingerprints, Government databases in the United Kingdom, so understanding it makes those chapters shorter.
In everyday life: Look for IDENT1 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study IDENT1 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IDENT1 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain IDENT1 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IDENT1 in simple terms?

Why does IDENT1 matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IDENT1?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IDENT1.