Visitor card digitizer — GPT Project

Setup guide.

Step-by-step from “fresh install” to “first run.” Skim it once, then keep this page open while you go.

Before you start

This GPT reads photos of paper visitor cards and outputs a CSV ready for Brevo import. You'll need a ChatGPT Plus or Team account (custom GPTs require Plus+) and any phone with a camera. Setup is 5 paste-in fields, takes 5 minutes.

Step 1 — Create the GPT

In ChatGPT, profile menu → My GPTs → Create a GPT. Click the 'Configure' tab at the top (skip the conversational setup). You'll see fields for Name, Description, Instructions, Conversation starters, and Capabilities.

Step 2 — Paste the 5 fields

Open the .txt file from the Quick Install button. It's structured as 5 labelled blocks. Copy each block into the matching ChatGPT field. Conversation Starters takes one starter per line. For Capabilities, leave Web Browsing / Code Interpreter / DALL·E all OFF — the file explains why.

Step 3 — Test with one card before you use a stack

Save the GPT. Open it. Upload one well-lit photo of a single card and ask it to extract. Verify the CSV looks right and the confidence flag matches your impression of the handwriting. Once that works, scale up to a stack — multiple cards laid out on a table in one photo work, but the more cards per photo, the more chance of low-confidence reads.

Troubleshooting.

Hit one of these? Here's the fix.

Lots of fields come back blank with low-confidence flags

Photo quality is the lever. Re-shoot with better lighting (natural light, no shadow on the card), the camera straight overhead (not at an angle), and one card per photo for hard-to-read handwriting. The Instructions field explicitly tells the GPT to flag rather than guess — that's the right behaviour, but it surfaces photo-quality issues fast.

GPT extracts emails that don't match what's actually on the card

This is a real failure — the Instructions field says 'never invent a field'. If you see invented emails, the Instructions probably weren't fully pasted (the 'Confidence handling' section should be present). Re-save the GPT with the full Instructions. Until then, manually verify every email row against the photo before importing to Brevo.