Truecaller delivers an experience that goes beyond the limitations of today’s phonebook apps so that people always have access to the right information, people and businesses they need. It lets you search for contact information (based on name or number), identify incoming calls, and block calls you don’t want to receive – so you never have to leave the service to find the right contact.
Truecaller was an idea of two engineers who aimed to create something new in the world of technology. Today they stand as a company of 55 international minds coming from different corners of the world to make a service that stretches every remote place of the world.
Today, many smart phone users are using Truecaller to trace out a lot of spam calls they get everyday. So, did you ever wonder How Truecaller actually works? How does it know all the phone numbers and caller ids?
How does Truecaller app work?
Truecaller acts on a give and take scenario… You want those unknown numbers then you have to part with your phone book contacts.. Now apparently everyone who has installed the app has surrendered his phone book. The data is crowd-sourced from the millions of users who have downloaded the truecaller app on their smart phones. As part of the end user agreement, the truecaller app asks the user to allow access to the user’s address book/contacts on the smart phone. This data is then uploaded by the app to the company’s servers. After going through several data matching/refining algorithms, this data is made available to all truecaller users to search upon.
The story must start from the login screen. If you have already used Truecaller, you might have seen that Truecaller only allows either Facebook, Yahoo! or Gmail to access Truecaller app. If you don’t have one you cannot connect to Truecaller database. This is because, Facebook, Gmail and Yahoo! are the most widely used social networking sites that contain a lot of phone numbers and other contact details. It implies that when you use one of the social sites, your entire contacts including phone numbers, contact names, email ids will be uploaded to a secure Truecaller server. In case you login to the app using your mobile phones then your entire address book will be sent to the Truecaller servers. These are organized into records and each number will be assigned a Truecaller id. When some one searches the number using Truecaller number search, the caller id associated with that number will be displayed.
So out of all the people who know you and have your contact number stored against your name in their phones – if even 1 person uses the truecaller app, your contact number and name would end up in the truecaller database
The first SIM card was developed by the German company Giesecke & Devrient GmbH , which later sold three hundred cards to the Finnish operator Radiolinja that began commercial operation in 1991 . It was unique to each phone line, so the operator that you chose added your identifying data and the services offered. SIM cards are available in 4 different formats: Full size (1FF), Mini SIM (2FF), Micro SIM (3FF) and Nano SIM (4FF) and their evolution has gradually downsized over time. The SIM has been a faithful companion of phones, and now smartphones and some tablets for quite some time, but there is a fundamental change coming your way and it is already happening.
The SIM card revolutionised the Telecom industry and spurred us into the world of portable communication which moved onto smartphones. Twenty five years after its first integration, the humble SIM card is now possibly facing the end of an eventful life changing life span.
As was announced as a standard in February 2016 at the GSMA Mobile World Congress, the eSIMspecification describes a SIM on a chip that is soldered directly onto the circuit board of the connected or mobile device. Once a device is eSIM enabled, the end user is able to select multiple mobile networks without physically changing the SIM card. The eSIM therefore does away with the need to insert a physical SIM card into the device.
However, it’s important to note that the eSIM is different to the SIM cards, which are essentially chips from plastic SIM cards that are inserted into where a SIM slot would be on a device. Soldered on SIM cards are still tied to a network operator and provided by a specific mobile network.
Once eSIM technology in both mobile network carriers and devices is widespread, there will be a visible shift in how connected devices can operate and how business is done in this arena.
The new concept replaces the physical SIM by an integrated electronic device, thus eliminating a slot to house the same or disappearance of different numbers with different cards such as Dual SIM devices. Real estate inside a smartphone is expensive, as evidenced by the removal of the 3.5mm headphone jack from phones such as the iPhone7.
The SIM card as we know it will eventually come to an end. There is a new SIM in town, and it will make switching telecom providers a lot easier for everyone.
Project Loon balloons are designed and manufactured at scale to survive the conditions in the stratosphere, where winds can blow over 100 km/hr and the thin atmosphere offers little protection from UV radiation and dramatic temperature swings which can reach as low as -90°C. Made from sheets of polyethylene, each tennis court sized balloon is built to last m.
Project Loon has taken the most essential components of a cell tower and redesigned them to be light enough and durable enough to be carried by a balloon 20 km up in the stratosphere. All the equipment is highly energy-efficient and is powered entirely by renewable energy – with solar panels powering daytime operations and charging a battery for use during the night.
ore than 100 days in the stratosphere
Our custom-built Autolaunchers are designed to launch Loon balloons safely and reliably at scale. Huge side panels provide protection from the wind as the balloon is filled and lifted into launch position, and then the crane is pointed downwind to smoothly release the balloon up into the stratosphere. Each crane is capable of filling and launching a new balloon into the Loon network every 30 minutes.
Project Loon balloons travel approximately 20 km above the Earth’s surface in the stratosphere, well above airplanes, wildlife, and weather events. In the stratosphere winds are stratified, and each layer of wind varies in speed and direction. To get balloons to where they need to go, Project Loon uses predictive models of the winds and decision-making algorithms to move each balloon up or down into a layer of wind blowing in the right direction. By moving with the wind, the balloons can be arranged to provide coverage where it’s needed.