Travel tech — short for travel technology — is the broad ecosystem of software, platforms, data systems, and digital tools that power the modern travel industry. It covers everything from the app you use to book a flight to the enterprise platforms that help multinational companies manage billions of dollars in annual travel spend. The term is sometimes used narrowly to mean consumer booking tools, but in practice it spans the entire value chain of travel: planning, booking, operations, customer service, payments, compliance, and analytics.

Every corporate WiFi network that prompts for a username and password rather than a passphrase is running 802.1X authentication backed by a RADIUS server. The mechanism is invisible to end users but structurally different from home WiFi in ways that matter enormously for security. Understanding how it works explains why enterprise networks handle compromised credentials, device theft, and regulatory compliance requirements in ways that passphrase-based networks cannot. The Limitation of PSK Authentication Home and small office WiFi uses a pre-shared key: one passphrase, shared among all users and all devices.

Most devices show WiFi signal as a series of arcs — full bars, three bars, two bars, one bar, gone. The arc display is a hardware abstraction that tells you almost nothing useful for diagnosing problems or evaluating placement. Underneath it is a real number, expressed in dBm, that tells you exactly where on the performance curve your device is operating. Reading that number directly converts WiFi troubleshooting from guesswork into measurement.

Every dual-band router sold since 2009 has advertised two radios as a feature. Until WiFi 7, those two radios could not cooperate to serve a single device. Each client connected to one band or the other — not both. Multi-Link Operation, the defining architectural feature of WiFi 7, changes that constraint fundamentally. What Dual-Band Actually Meant Before WiFi 7 A dual-band WiFi 5 or WiFi 6 router presents two separate wireless networks: one on 2.

Every indoor WiFi deployment contends with the same physics: concrete pillars block signal, metal file cabinets create shadows, thick structural walls force users to connect at degraded rates from around corners. The engineering response to date has been to add more access points, reducing the distance from every point to the nearest AP until the obstructions no longer matter. Reconfigurable Intelligent Surfaces propose a different response: change the environment itself.

The Comprehensive WiFi Guide: Standards, Security, Optimization, and the Future of Wireless Networking Wireless networking has reshaped how humanity connects, communicates, and computes. From the first hesitant deployments of 802.11b in late-1990s coffee shops to the multi-gigabit, multi-link environments of WiFi 7, the arc of WiFi’s development is one of the most consequential stories in consumer technology. This guide covers everything: the physics, the standards genealogy, the security landscape, real-world deployment strategy, troubleshooting methodology, and what the standards bodies are building next.

Every WiFi router box advertises a number. WiFi 6 routers claim “up to 9.6 Gbps.” WiFi 7 boxes say “up to 46 Gbps.” Somewhere in your home is a router that claims speeds you have never once measured. There is no deception happening, exactly — the numbers are real — but the gap between the specification ceiling and the performance you experience is built from a stack of assumptions that the packaging does not explain.

In October 2017, security researcher Mathy Vanhoef published a paper describing Key Reinstallation Attacks — KRACK — against the WPA2 four-way handshake. The disclosure triggered emergency patches across every major operating system, router firmware, and WiFi chipset vendor simultaneously. It was the most significant WiFi security event between WEP’s collapse in the early 2000s and WPA3’s introduction in 2018. Understanding what KRACK was, and what it actually threatened, clarifies both the state of WPA2 security today and how the WiFi security ecosystem responds to structural vulnerabilities.

An apartment building is the worst possible RF environment for WiFi. Dozens of routers operating within radio range, confined by concrete and drywall to a shared spectrum envelope, contending for three non-overlapping 2.4 GHz channels and a finite pool of 5 GHz channels. The interference is not random — it is structured and analyzable. A ten-minute channel survey and deliberate channel selection produces measurably better performance than accepting whatever channel the router’s auto-select algorithm chose.

OFDMA — Orthogonal Frequency Division Multiple Access — is the core innovation that separates WiFi 6 from everything that came before it. The marketing copy says WiFi 6 is better in crowded environments, and it is true. OFDMA is specifically why. The Problem With How Older WiFi Worked Every WiFi standard from 802.11a through WiFi 5 used OFDM — Orthogonal Frequency Division Multiplexing — as its physical layer transmission scheme. OFDM is excellent.