Inside the Data Center Boom on the Edge of Town
Three new facilities will use as much power as 90,000 homes. The utility says it’s ready. Neighbors aren’t…
Most read
Trending#Entertainment#Tech#Finance- U.S.City Council Passes $2.1 Billion Transit Budget After Late-Night Vote1 week ago
- PoliticsLive: Election Night 2026 — Results, Races to Watch and Analysis1 week ago
- ClimateBike Commuting: Getting Started in Your City2 weeks ago
- LifestyleThe Tea Ritual: Ten Minutes That Change Your Morning4 weeks ago
- SportsUnderdog Huskies Stun the Top-Ranked Rivals in Overtime1 week ago
- Real EstateFirst-Time Buyers Head Back to the Suburbs as Prices Ease and Commutes Shrink4 months ago
Circuit Daily — Technology, tested and explained
Schools Test AI Tutors — With Teachers Firmly in Charge
Twelve middle schools are trying chat-based math help this fall. Here’s what students and teachers think so far.
Latest in tech
All tech
Tech
Are Expensive Gaming Headsets Worth It? We Tested Twelve
From $39 to $299: where the money goes, and the mid-range pair we would buy with…
AI
Robots Are Running Experiments in Self-Driving Labs
Machines that mix, measure and decide what to try next.
Tech
Mechanical Keyboards Explained: Switches, Sizes and What Actually Matters
Linear or tactile? Full-size or 75%? A plain-English guide before you buy.
Most read in tech
- 1
- 2
- 3
- 4
- 5
- 6
AI · Gadgets · Science
Science
University Telescope Spots a Comet That Will Be Visible This Winter
Astronomers say it may be bright enough to see without binoculars by mid-January.
How it works
Passkeys are quietly replacing passwords. Here is the whole idea in nine lines — and what actually changes for you.
# Passkeys in one minute: your device makes a key pair.
# The site keeps only the PUBLIC key, so there is no password to steal.
site.register(user, public_key)
# Signing in: the site sends a random challenge...
challenge = site.new_challenge()
# ...your phone signs it with the PRIVATE key (after Face ID or a PIN)
signature = device.sign(challenge)
site.verify(user, signature) # True: you are in, no password typedA simplified sketch of how a passkey sign-in works.
Reviews
All reviews
Budget phones, compared
| Phone | Halden A5Best battery$299 |
Our pickLumio 8aBest overall$399 |
Brisk SBest camera$449 |
|---|---|---|---|
| Battery (our test) | 19 hr | 17 hr | 15 hr |
| Screen | 6.5 in | 6.1 in | 6.4 in |
| Updates promised | 3 years | 7 years | 5 years |
| Wireless charging | |||
| Our score | ★★★★★★★★★★3.5 | ★★★★★★★★★★4.5 | ★★★★★★★★★★4 |
| No features match your search. | |||
Halden A5Best battery$299
- Battery (our test)19 hr
- Screen6.5 in
- Updates promised3 years
- Wireless charging
- Our score★★★★★★★★★★3.5
Our pickLumio 8aBest overall$399
- Battery (our test)17 hr
- Screen6.1 in
- Updates promised7 years
- Wireless charging
- Our score★★★★★★★★★★4.5
Brisk SBest camera$449
- Battery (our test)15 hr
- Screen6.4 in
- Updates promised5 years
- Wireless charging
- Our score★★★★★★★★★★4
Compiled by our reviews desk from published rates and our own tests.
Watch
This video is for subscribers. Subscribe to watch every video.
Subscribe to watchUp next
Video 1 of 3
Commercial Rocket Launch Lights Up the Coast at Dawn
Thousands gathered on the beach for the first launch from the new coastal pad.
The Circuit podcast
16 min15 min17 minThe winter storm and the power grid
How utilities prepare for heavy snow, and why outages still happen.
20 minInside the AI note-taker in your doctor’s office
Lauren Hayes and Grace Holloway on the promise and the privacy questions.
No episodes match your search.
Advertisement
✦Motion Effects is onMenu, headings and images animate on the live page (not in the editor).