Enlarge / Oral-B released the Guide in 2020, making promises of Alexa-powered convenience, which it ended in 2022. (credit: P&G)

As we’re currently seeing with AI , when a new technology becomes buzzy, companies will do almost anything to cram that tech into their products. Trends fade, however, and corporate priorities shift—resulting in bricked gadgets and buyer's remorse.

That’s what's happening to some who bought into Oral-B toothbrushes with Amazon Alexa built in. Oral-B released the Guide for $230 in August 2020 but bricked the ability to set up or reconfigure Alexa on the product this February. As of this writing, the Guide is still available through a third-party Amazon seller.

Oral-B debuted the Guide by highlighting its Alexa features. (credit: P&G)

The Guide toothbrush's charging base was able to connect to the Internet and work like an Alexa speaker that you could speak to and from which Alexa could respond. Owners could “ask to play music, hear the news, check weather, control smart home devices, and even order more brush heads by saying, ‘Alexa, order Oral-B brush head replacements,'” per Procter & Gamble's 2020 announcement.

Enlarge / This is essentially the kind of water heater the author has hooked up, minus the Wi-Fi module that led him down a rabbit hole. Also, not 140-degrees F—yikes. (credit: Getty Images)

The hot water took too long to come out of the tap. That is what I was trying to solve. I did not intend to discover that, for a while there, water heaters like mine may have been open to anybody. That, with some API tinkering and an email address, a bad actor could possibly set its temperature or make it run constantly. That’s just how it happened.

Let’s take a step back. My wife and I moved into a new home last year. It had a Rinnai tankless water heater tucked into a utility closet in the garage. The builder and home inspector didn't say much about it, just to run a yearly cleaning cycle on it.

Because it doesn’t keep a big tank of water heated and ready to be delivered to any house tap, tankless water heaters save energy—up to 34 percent, according to the Department of Energy . But they're also, by default, slower. Opening a tap triggers the exchanger, heats up the water (with natural gas, in my case), and the device has to push it through the line to where it's needed.

Enlarge / A group of Black Friday online shopping purchases photographed in delivery boxes filled with polystyrene packing pellets, taken on September 13, 2019. (Photo by Neil Godwin/Future Publishing via Getty Images) (credit: Getty Images)

If you build a gadget that connects to the Internet and sell it in the United Kingdom, you can no longer make the default password "password." In fact, you're not supposed to have default passwords at all.

A new version of the 2022 Product Security and Telecommunications Infrastructure Act (PTSI) is now in effect, covering just about everything that a consumer can buy that connects to the web. Under the guidelines , even the tiniest Wi-Fi board must either have a randomized password or else generate a password upon initialization (through a smartphone app or other means). This password can't be incremental ("password1," "password54"), and it can't be "related in an obvious way to public information," such as MAC addresses or Wi-Fi network names. A device should be sufficiently strong against brute-force access attacks, including credential stuffing , and should have a "simple mechanism" for changing the password.

There's more, and it's just as head-noddingly obvious. Software components, where reasonable, "should be securely updateable," should actually check for updates, and should update either automatically or in a way  "simple for the user to apply." Perhaps most importantly, device owners can report security issues and expect to hear back about how that report is being handled.

Enlarge (credit: Open Home Foundation)

Home Assistant, until recently, has been a wide-ranging and hard-to-define project.

The open smart home platform is an open source OS you can run anywhere that aims to connect all your devices together. But it's also bespoke Raspberry Pi hardware, in Yellow and Green . It's entirely free, but it also receives funding through a private cloud services company, Nabu Casa . It contains tiny board project ESPHome and other inter-connected bits. It has wide-ranging voice assistant ambitions , but it doesn't want to be Alexa or Google Assistant. Home Assistant is a lot.

After an announcement this weekend, however, Home Assistant's shape is a bit easier to draw out. All of the project's ambitions now fall under the Open Home Foundation , a non-profit organization that now contains Home Assistant and more than 240 related bits. Its mission statement is refreshing, and refreshingly honest about the state of modern open source projects.

Enlarge (credit: Liudmila Chernetska/Getty )

Airbnb, like hotels and rival vacation rental site Vrbo , will no longer allow hosts to record guests while they're inside the property. Airbnb previously allowed hosts to have disclosed cameras outside the property and in "common areas" inside, but Airbnb's enforcement of the policy and the rules' lack of specificity made camera use troubling for renters.

Airbnb announced today that as of April 30, it's "banning the use of indoor security cameras in listings globally as part of efforts to simplify our policy on security cameras and other devices" and to prioritize privacy.

Cameras that are turned off but inside the property will also be banned, as are indoor recording devices. Airbnb's updated policy defines cameras and recording devices as "any device that records or transmits video, images, or audio, such as a baby monitor, doorbell camera, or other camera."

Enlarge / Wyze's Cam V3 Pro indoor/outdoor smart camera. (credit: Wyze )

Wyze cameras experienced a glitch on Friday that gave 13,000 customers access to images and, in some cases, video, from Wyze cameras that didn't belong to them. The company claims 99.75 percent of accounts weren't affected, but for some, that revelation doesn't eradicate feelings of "disgust" and concern.

Wyze claims that an outage on Friday left customers unable to view camera footage for hours. Wyze has blamed the outage on a problem with an undisclosed Amazon Web Services (AWS) partner but hasn't provided details.

Monday morning, Wyze sent emails to customers, including those Wyze says weren't affected, informing them that the outage led to 13,000 people being able to access data from strangers' cameras, as reported by The Verge .

Enlarge (credit: Getty Images)

Wyze cameras have been unreliable for many users for more than nine hours today, with cameras disappearing from the Wyze app or simply reporting errors when owners try to view them.

Users started reporting issues on Down Detector just before 4 am Eastern time, and the company issued a service advisory at 9:30 am. As of 1 pm, the company stated that its "metrics show that devices are starting to recover," and later that there was "continued improvement," but it was still investigating history viewing issues. At 1:15 pm, an Ars writer was able to view his Wyze v3 camera feed and update its firmware.

Wyze attributed the issue to an "AWS partner" in an earlier update. Amazon Web Services' dashboard showed no issues or outages as of 1:30 pm Eastern. Ars reached out to Wyze for comment and will update this post with new information.