Signal has launched Signal Login, an optional registration method allowing users to create accounts without phone numbers, first on Android then iOS. The feature requires a one-time $2.99 payment to prevent spam, uses zero-knowledge proofs for privacy, and remains optional alongside traditional phone-number-based registration.
Google Wallet for Android is testing a vertically stacked card list design to replace the current horizontal carousel, improving one-handed usability and better accommodating users with multiple saved cards. The new layout mirrors iPhone's Wallet app while displaying more of each card's design.
Sharden is a mineable cryptocurrency designed for miners to independently produce and use as additional payment compensation when mining other cryptocurrencies. The coin has no premine or centralized issuer, with new coins created entirely through mining rewards paid directly to miners.
Researchers demonstrate 'whisper attacks' against agent payment protocols like AP2, where product descriptions can manipulate shopping agents into forming unauthorized purchases with valid cryptographic signatures. They propose A-VIP, a defense mechanism that binds credentials and cart items to their original context to prevent these attacks.