ADR-0001: No wireless radio in v1

Status: accepted, amended by ADR-0007 (a passive NFC tag, RF disabled except while the read button is held)
Date: 2026-10-12
Requirements touched: P-09, S-01, S-07

Context

The brief says "no Wi-Fi." The memo's fourth belief — "We don't have control over the propagation of our words once recorded" — means every path off the device is a path the room loses control over. Bluetooth would bring back silent sync to a phone and, with it, most of the distrust Goldfish exists to remove.

Options

Option	For	Against
No radio at all	Simplest trust story ("it can't send anything"); certification as an unintentional radiator only (FCC Part 15 Subpart B / CE EMC)	Preferences and export need a wired or contact path
NFC only	Touch-range, natural "in the room" gesture for tokens and phones	Intentional radiator — adds certification; still a radio in the story
BLE	Phone app, easy UX	Contradicts the brief in spirit

Decision

No radio of any kind in v1, including NFC.

Consequences

Preferences come in by voice (ADR-0003); the device answers with light (ADR-0006).
Memory is read only through a wired, physically-held connection (ADR-0004).
An RF scan in the EMC pre-scan becomes a marketing artefact: proof of silence.

# ADR-0001: No wireless radio in v1 - **Status:** accepted, amended by ADR-0007 (a passive NFC tag, RF disabled except while the read button is held) - **Date:** 2026-10-12 - **Requirements touched:** P-09, S-01, S-07 ## Context The brief says "no Wi-Fi." The memo's fourth belief — "We don't have control over the propagation of our words once recorded" — means every path off the device is a path the room loses control over. Bluetooth would bring back silent sync to a phone and, with it, most of the distrust Goldfish exists to remove. ## Options | Option | For | Against | |---|---|---| | No radio at all | Simplest trust story ("it can't send anything"); certification as an unintentional radiator only (FCC Part 15 Subpart B / CE EMC) | Preferences and export need a wired or contact path | | NFC only | Touch-range, natural "in the room" gesture for tokens and phones | Intentional radiator — adds certification; still a radio in the story | | BLE | Phone app, easy UX | Contradicts the brief in spirit | ## Decision No radio of any kind in v1, including NFC. ## Consequences - Preferences come in by voice (ADR-0003); the device answers with light (ADR-0006). - Memory is read only through a wired, physically-held connection (ADR-0004). - An RF scan in the EMC pre-scan becomes a marketing artefact: proof of silence.