Guides

BIFF stands for Brief, Informative, Friendly, Firm — a four-rule framework developed by Bill Eddy for writing communications in high-conflict situations. The rules are: keep messages short (Brief), stick to facts only (Informative), use a neutral but courteous tone (Friendly), and end the matter rather than inviting back-and-forth (Firm). Applied consistently, BIFF produces messages that read well in court, reduce the temperature of the exchange, and protect you from your own worst replies. Worked examples below.

If the other parent refuses to use a written-record platform, you have three options that compound: (1) use the platform yourself for everything you send, regardless of their participation; (2) follow up every phone call or in-person discussion with a written summary message; (3) if the matter is heading to court or formal mediation, use the refusal itself as evidence and ask the relevant practitioner to recommend or order a structured channel. The goal is the record, not the agreement to use a record. You can build a useful record one-sided if you have to.

To document co-parent communication for the Federal Circuit and Family Court of Australia (FCFCOA), use a tamper-resistant platform that server-stores every message with verified timestamps and read receipts. Export to PDF periodically and store securely. Keep messages factual and neutral (the BIFF method works well). Don't delete anything. Don't rely on screenshots alone for evidentiary use. The strongest record is built day-by-day from the start, not assembled after the matter goes wrong.

The Federal Circuit and Family Court of Australia (FCFCOA) operates under the Evidence Act 1995 (Cth) and the Federal Circuit and Family Court of Australia Rules 2021. For parents documenting co-parent communication, three principles matter: relevance (the evidence must speak to a fact in dispute), authenticity (the evidence must be genuine), and integrity (the record must not have been altered). Electronic records — text messages, emails, app messages — are admissible on the same basis as paper documents. The strength of the evidence depends on how verifiable the integrity is.

A hash chain is a sequence of messages where each one is cryptographically linked to the one before it using a SHA-256 fingerprint. Change a single character in any message and the chain breaks from that point forward in a way that is mathematically detectable. For co-parent communication used as evidence, this transforms 'we have to trust the platform' into 'we can verify the record is intact.' The technique is what distinguishes a tamper-resistant message log from an ordinary database table.

Money disputes are the second-most-common category of co-parent communication after handovers, and they account for a disproportionate share of matters that escalate. The discipline that prevents them: confirm every shared expense in writing before paying, send screenshots or invoices with every request, document agreement (or disagreement) explicitly, and never assume a verbal 'yeah, sounds good' is binding. The platform record of money discussions is often the single most useful evidence in family-law matters involving financial disputes.

Co-parenting and parallel parenting are two distinct approaches to raising children after separation. Co-parenting involves active collaboration — joint decisions, flexible communication, shared events. Parallel parenting involves disengagement — minimal communication, strict boundaries, separate decision-making within each household. Co-parenting works when both parents can communicate productively. Parallel parenting works when they cannot. Choosing parallel parenting is not failure — for many separations it is the more functional and child-protective approach.

Pickup and drop-off communication is the highest-volume, highest-friction category of co-parent messaging. Most disputes about parenting arrangements eventually trace back to specific handover incidents — late arrivals, missed pickups, schedule changes. The discipline that prevents these from becoming unresolvable later: confirm every change in writing, document every late arrival or missed pickup with a brief factual note, and use a platform that timestamps reliably. The mundane logistics record is often the most valuable record.

Screenshots of text messages are admissible in the Federal Circuit and Family Court of Australia, but they are evidentiarily weaker than messages produced by a tamper-resistant platform. Screenshots are easy to dispute (selective cropping, possible editing, no server-side timestamp verification). An immutable platform record — server-stored, hash-chained, with verified timestamps and read receipts — is harder to challenge and produces stronger evidence. Use screenshots if that is what you have. Use a platform if you can choose.

Yes — text messages are generally admissible as evidence in the Federal Circuit and Family Court of Australia (FCFCOA). They are treated as electronic records under the Evidence Act 1995 (Cth). Their evidentiary weight depends on three things: authenticity (can you prove they are genuine), integrity (can the other party show they have not been altered), and relevance (do they speak to the matter before the court). Plain text messages from a phone are admissible but weaker than messages produced by a tamper-resistant platform with verified timestamps.

BIFF is a written-communication framework for high-conflict situations, developed by Bill Eddy of the High Conflict Institute. It stands for Brief, Informative, Friendly, Firm — the four properties every written reply should have when you are communicating with someone whose responses tend to escalate. It is widely used in legal, workplace, and family-law contexts. For separated parents, BIFF is the most practical framework for writing co-parent messages that read well in court, reduce the temperature of the exchange, and protect you from your own worst replies.