Thursday, 26 October 2017

WhatsApp ‘Delete for Everyone’ feature is finally here: Here’s how it works

If you have been sending messages to unintended recipients on WhatsApp and having awkward apology sessions thereafter, this piece of information will cheer you up. After working on the feature for quite some time, the message revoke or delete message for everyone is finally out of beta, and being rolled out to iOS users.
Starting today, WhatsApp is slowly rolling out the Delete for Everyone feature for iOS, Android, and Windows Phone users. As WABetainfo.comnotes, the feature allows you to delete messages in private chats or group conversations. The caveat here is that both the sender and receiver need to be on the latest WhatsApp version.
As is the case with a lot of new WhatsApp features, the Delete for Everyone feature is also being rolled out gradually and you may not immediately get the prompt for the update. The feature applies to text messages, images, videos, GIFs, voice messages, contact cards, files, locations, quoted messages, status replies, and stickers (a new feature expected to be rolled out soon)
How Delete for Everyone feature worksWhen you delete the unintended message, WhatsApp sends a fake copy of the message to the recipient. When the recipient receives that copy, their device won’t show the notification, nor will it save it in his chat history, but it will check if there is the ID of the message in WhatsApp’s database, locate it, and correctly revoke it.
The revoked or recalled messages will also be deleted in the notifications center on iOS. On Android, this message will be replaced with “This message was deleted for everyone”. For quoted messages, WhatsApp is currently not recalling the message that is contained in a quoted reply. Broadcast List also does not support message revoking ability. WhatsApp for Symbian also does not support the feature.
One of the most important things to note here is that you can only use ‘Delete for Everyone’ feature within seven minutes of sending an unintended message. Now this could be a little tricky given how millions of conversations are happening on the platform every minute and in group conversations, it is highly unlikely of members not seeing the unintended message almost as soon as it is sent. Secondly, WhatsApp will not show you the notification for message revoke. On Android, “This message was deleted for everyone” will be the only indication.

The world's first Track-less train that runs on 'virtual railways' begins operating in China

A futuristic rail system featuring track-less trains and virtual lines was launched in a Chinese city of Zhuzhou.
Billed as the world's first 'smart train', the vehicle runs on virtual rail lines through the bustling streets of Zhuzhou in China's Hunan Province, reported People's Daily Online.
The train could travel as quickly as 70kmh, or 43 mph, and carry as many as 300 passengers

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Light L16 Camera Uses 16 Lenses to Rival DSLR Quality and Convenience

The L16 camera developed by venture-backed California-based Light recently commenced shipping to pre-order customers. This marks the next phase of the company's plans for a novel optics architecture intended to match or exceed the performance of DSLR cameras, but do so from a more consumer-friendly unit.

The camera's design employs 16 different lenses and optical modules within the one chassis, capturing a scene at several different focal lengths and then applying algorithms specifically developed for the purpose to combine the multiple exposures into a single high-resolution image.

Although only slightly larger than a current smartphone, the L16 is designed to deliver significant improvements in image quality and photographic performance over that currently possible from consumer cameraphones, as well as capturing certain image information that a conventional camera would not gather at all.

"The problem that besets DSLR photography is the bulk of the equipment involved and the need to carry multiple lenses," commented Rajiv Laroia of Light. "Smartphones are much easier to carry, but cannot deliver the same image quality, which is frustrating for photographers using them."
Laroia, whose previous industrial background was in the comms sector for AT&T Bell Labs and Qualcomm before he turned to the optics of photography, designed a solution that would leverage both the recent advances in optical component technology that smartphones have spurred, and some novel systems technology developed for this particular purpose.

Adjustable depth of field

The L16 replaces the bulk and weight of a traditional single-lens camera with several small lenses and sensors, that lie at 45-degree angles across a flat plane. The internal architecture exploits some of the principles behind folded optics to keep the chassis height on a par with that of the smartphones which customers are used to carrying, despite the presence of 16 individual optics units delivering three different focal lengths of 28, 70, and 150 mm.

In use, the L16 intelligently chooses the best combination of the three different focal lengths for each scene, depending on the level of zoom, and adjusts its mirrors to support various fields of view. At least ten of the individual cameras fire simultaneously in each shot, capturing slightly different views of the same scene.

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Vodafone has launched a Rs 69 SuperWeek plan with Unlimited free calling & 500MB data for 7 Days.

Vodafone has rolled out a new SuperWeek plan worth Rs 69, offering users unlimited free voice calling and limited data. Under this Vodafone SuperWeek plan, people will get unlimited free local and STD calls to any network along with 500MB data on a recharge of Rs 69. Validity is seven days. Vodafone’s latest SuperWeek plan isn’t a one-time offer as users can make unlimited repeat purchases of the pack.
“We, at Vodafone, believe in providing the best network, service experience and value to our customers. With SuperWeek, the key objective is to offer a pocket friendly and affordable unlimited plan that will appeal to all prepaid consumers. This plan will further enable our customers to remain confidently connected and enjoy a worry free Vodafone SuperNetTM4G experience on our best network ever,” Avneesh Khosla, Associate Director – Consumer Business, Vodafone India said.

Xiaomi teases a new selfie centric smartphone series in India

According to media invites and Xiaomi's tweets, the company is gearing up to launch a brand new smartphone series in India on November 2. The images hint at selfie-centric smartphones from Xiaomi. That being said, there is barely any information out there about what exactly Xiaomi has in store for us, one week from now.
The media invites include an image that features a bolt, similar to what we’ve seen during the launch of MIUI 9. Some rumours suggest that Xiaomi could be launching MIUI 9 tailored for Indian users, but going by the images tweeted out by one of Xiaomi India’s official Twitter handles, it looks like there is more to it than just MIUI 9.

In addition to this, Xiaomi has also posted on its official forums that this brand new series “includes something you have been impatiently waiting for”. What this news series is about is anyone’s guess at the moment – there are no new Xiaomi phones that have been launched in China recently and are due for an Indian launch. It is possible that Xiaomi may introduce an entirely new series of devices in India (instead of China, this time), just like it did with the Mi A1, but there’s no concrete information about this by the rumour mills either.

ISRO planning to build secure quantum communications network.

Raman Research Institute (RRI) in Bengaluru has joined hands with the Indian Space Research Organization (ISRO) to develop the quantum technologies that ISRO's satellites would need to establish such a network.

After some delay, India is joining the handful of nations that have already embarked on a new kind of space race to build satellite networks for secure “quantum communications”. Existing communications systems are not hack-proof. Raman Research Institute (RRI) in Bengaluru has joined hands with the Indian Space Research Organization (ISRO) to develop the quantum technologies that ISRO’s satellites would need to establish such a network.
Quantum communication exploits a bizarre phenomenon of quantum mechanics – called “quantum entanglement” – in which photons (which are particles of light) are “linked” together in such a way that they affect one another no matter how far apart they are. They appear to be connected to each other, as if by magic, and behave as a single physical object.
Because a third party cannot tamper with the photons without destroying their “entanglement”, there’s no way to eavesdrop undetected. Under the memorandum of understanding signed recently between RRI and ISRO Space Applications Centre (ISAC) also in Bengaluru, the latter will fund the Quantum Information and Computing (QuiC) laboratory at RRI for developing the quantum technology tools.