Ambimat GroupAmbimatAmbiSecureeSIM InitiativeEngineering BlogAhmedabad · India · Est. 1981
Tag

Posts tagged "Transit"

7 posts carrying the Transit tag, newest first.

2026-05-11 · modern

Why Transit Validators Need Offline Trust Architecture

Closed-loop transit ticketing has to keep collecting fares when the backend is unreachable.

Read article → Transit · DESFire · Offline Authentication
2025-11-28 · modern

Designing Low-Latency Secure Transit Validators

Why transit validators need offline trust, sub-300ms response, and SAM-backed attestation. With real numbers.

Read article → Transit · DESFire · Offline Authentication
2025-11-20 · modern

Why SAMs Matter in Closed-Loop Transit

Secure Access Modules in transit reader design, when to use them, and where they earn their cost.

Read article → Transit · Smart Cards · Offline Authentication
2020-08-28 · archive

Understanding EMV certification In Public Transportation

A practical look at EMV certification in public transport — which certifications apply, the roles of acquirer, scheme, terminal vendor, and transit authority, and the typical timeline from prototype to revenue service.

Read article → Transit · Smart Cards
2020-05-26 · archive

Public Transport Ticketing System (Part-3)

Part three of the AFC series — comparative notes across the analysed countries, what was common in mature ticketing architectures, and where hardware-rooted secure access modules sit in the stack.

Read article → Transit
2020-05-18 · archive

Public Transport Ticketing System (Part-2)

Part two of the AFC series — how Ambimat Electronics has approached automated fare collection: validators, SAM-backed offline trust, and revenue assurance.

Read article → Transit
2020-05-12 · archive

Public Transport Ticketing System (Part-1)

First of three articles on automated fare collection — a comparative look at ticketing architectures across advanced economies and large transit networks in Asia.

Read article → Transit