Insights
Practical guides on access control, smart cards and IoT terminals
Canteen POS Terminal Selection: What Really Causes Peak-Hour Latency
Peak-hour lag is rarely one cause: online mode, terminal compute, confirmation flow, menu structure and terminal count multiply together. Measure which step stalls before deciding whether to replace hardware or fix the process.
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Campus One-Card Procurement Checklist: Equipment, Budget Breakdown and Acceptance
One-card tenders go wrong on omissions: the equipment list is complete and nobody budgeted cabling, card issuance or integration. A checklist you can match line by line, with budget ratios and three traps.
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Liveness Detection on Face Terminals: Why Cheap Ones Fall to a Photograph
Whether a terminal survives a photo attack depends less on algorithm marketing than on a physical dimension: infrared or depth. Four questions to ask before you buy.
Read more →POS Terminal Networking: How TCP/IP and RS-485 Differ in Practice
RS-485 saves cable and switch ports, TCP/IP saves maintenance. Which one a canteen should use depends on terminal count, real-time needs and whether network cable already exists — including the hybrid that most sites actually deploy.
Read more →IC Card vs ID Card vs CPU Card: Which One for Your One-Card System
ID wins on price, IC on ecosystem, CPU on security. The three are not upgrades of each other — pick wrong and the whole system inherits the mistake. Here is a checklist you can act on.
Read more →Wiegand 26/34 vs RS-485: How to Choose an Access Control Reader Interface
Wiegand from reader to controller, RS-485 for device networking, TCP/IP for remote management. The protocol choice is easy — the cabling is what decides stability.
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