System-in-Package (SiP) is an integration approach in microelectronics that is technically located between monolithic on-chip integration (system-on-a-chip, SoC) on a die (unpackaged semiconductor chip) and on-board integration of discrete components on a printed circuit board (PCB) or on a multi-chip module (MCM). Passive and active components as well as other components are combined in a package … [Read more...]
Magic Links: How Passwordless Login URL Works
As technology has progressed, the ways in which we access information and content have also changed. We now have the ability to share links with others that allow them to access specific content without having to type the username or password. This is known as a magic link. A magic link is a hyperlink that allows direct access to a piece of content, often bypassing any intermediate security … [Read more...]
What is a Security Token?
A security token is a hardware component used to identify and authenticate users. Occasionally, it is also used to refer to software tokens. They are usually part of an access control system with two-factor authentication. The terms electronic key or chip key are also used to refer to a token. If necessary, other features must be used for authentication against misuse, including knowledge of a … [Read more...]
What is a Passkey?
Passwords are probably not as secure as we use to think. Google services support passkeys on Android devices and maybe you are already using it. Passkey is a passwordless authentication which is often referred to by the terms such as FIDO or WebAuthn. FIDO2 replaces passwords when logging in to online services. The acronym stands for Fast IDentity Online. It is a so-called strong authentication … [Read more...]
Required Parts to Build a Servo Steering Controlled Robot Car (Arduino/ESP32)
To build an Arduino or ESP32-powered 4-wheel robot car, you need some specific parts including a special chassis. In the case of ordinary 4-wheel drive, the wheel mechanism is less complex. You need rear-wheel drive plus a front steering mechanism to properly steer. As this kind of chassis is built using the professional remote-control racing principle. They use two rods through the steering servo … [Read more...]
Components of Software Configuration Management
Software Configuration Management SCM) is a specialization of configuration management in all activities and results in the field of software development as well as their use in products. This includes, among other things, the appropriate consideration of docking native product components and their variants (e.g. via compatibility matrices) throughout the entire product life cycle. Basic objects … [Read more...]
What We Mean By the Phrase Usability
Usability refers to the extent to which a system, product or service can be used by specific users in a specific context of use in order to achieve certain goals effectively, efficiently and satisfactorily. It is thus closely related to the more colloquially common term of user friendliness and the broader concept of user experience (UX). It is a notion close to that of affordance, or even … [Read more...]
Analog Circuit Basics (for Arduino)
While working with Arduino, and Raspberry Pi we often face components which work in the analog principle. For example an LDR or a thermistor or laser TOF sensor operates as analogue electrical circuits. Analog electronics is the part of electronics that exploits signals that can operate or be measured by continuous values. Analog electronics are complementary to digital electronics, which … [Read more...]
Door-to-door Sales and Marketing
Door-to-door (D2D) selling is a term for contracts that are concluded in certain situations, mainly during a visit to a representative (see direct sales, itinerant trade, commercial agents, travellers and peddlers). It is called off-premises sales when it comes to doorstep selling, is a prospecting marketing technique consisting of the direct solicitation of a person (on the telephone or at his … [Read more...]
Dimming AC Powered LED with Arduino
This guide contains instructions which involve handling 110/220V AC main supply which may create electric shock and death. Children and novices are suggested not to try this guide without monitoring by an expert. The AC light dimmer for Arduino is a type of modules which allow to vary the power of an alternating current. It has the same use as a transistor in direct current. It can be used to vary … [Read more...]
What is Wireless Mesh Network
A wireless mesh network is a network consisting of organized radio nodes. The organization in such case follows mesh topology. It can also be a type of wireless ad hoc network. In a mesh network, each network node is connected to one or more others. The network is coherent, from each node there is a path to every other node. The information is passed from node to node until it reaches the … [Read more...]