Library›Locks & Keys: Security›One card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

TechnologyOne small ahaSecurity concept

A sequence of numbers opens this kind of lock instead of a physical key.

Think it. Then flip it. ahamoraTap to reveal Back to the cue
TechnologyOne small aha
Your new ahaThe Combination Lock

Combination locks secure with a numeric sequence, removing the risk of a lost or copied key. Source: Combination lock ↗

ahamoraReference ↗

Keep the thread going

One answer is a beginning.

Share a little curiosity, or follow it into the full collection.

Flip the full deck →

More from Locks & Keys: Security

A few more worth knowing.

  1. 04This door-lock bolt moves by a key or thumb turn rather than a spring-loaded latch.IDENTIFY
    The Deadbolt

    A deadbolt resists forced entry far better than a standard spring latch, since it can't be simply pushed open.

    Open this card ↗
  2. 05These detachable locks secure objects with a shackle.RECALL
    Padlocks

    Padlocks are portable and detachable, ranking among the oldest and most widely used lock designs in history.

    Open this card ↗
  3. 06These secure containers protect valuables; some are rated for fire resistance as well as forced entry.RECALL
    Safes

    Safes protect valuables from theft and fire, often rated by how long they resist fire or forced entry.

    Open this card ↗