9to5Mac Daily: October 2, 2026 – MacBook Pro rumors, iPhone Duo display

Grading piano timing in the browser with Web MIDI

I picked up piano again this year and wanted to connect my digital piano to my laptop, read real sheet music, and figure out which notes or beats I missed. But none of the apps I tested could do that.

• Uses Web MIDI API to read USB keyboard input
• Handles note-off signal with velocity 0 or 64
• Generates metronome click with Web Audio API

3h ago ·dev.to

Sample Article_User Stories in Agile: How to Write Effective User Stories

Agile teams need a clear way to understand what users actually need without turning every requirement into a lengthy specification. This is where user stories in Agile come in.

• User stories describe user value without implementation details.
• Effective user stories follow As a [user], I want [goal] so that [benefit] format.
• The 3 Cs framework (Card, Conversation, Confirmation) guides user story creation.

3h ago ·dev.to

Postgres Multi-Tenancy: Row-Level Security, tenant_id Filters, or a Schema per Tenant?

For most B2B SaaS apps, a tenant_id column plus row-level security (RLS) on every table is the right default: you keep one schema and one migration path, and the database enforces isolation even when…

• Row-level security (RLS) with tenantid column is common starting point for PostgreSQL multi-tenancy.
• RLS can lead to data leaks if not implemented carefully, failing silently in both directions.

3h ago ·dev.to

WhatsApp adds restricted chats for better privacy

WhatsApp has introduced a new security feature called Restricted Chat for users. The optional tool adds another layer of privacy for selected individual conversations.

3h ago ·dailytimes.com.pk