# Blog · Kahma

> Kahma — Recent headlines.

- [Choosing an ArcFace Verifier: Thresholds 0.30 and 0.35](https://kahma.io/blog/choosing-an-arcface-verifier-thresholds-030-and-035.php/index.md)
- [ICAO 9303 Part 5: How Portrait Geometry Affects Verification](https://kahma.io/blog/icao-9303-part-5-how-portrait-geometry-affects-verification.php/index.md)
- [A2A Protocol Joins Agentic AI Foundation: 2026 Token Costs](https://kahma.io/blog/a2a-protocol-joins-agentic-ai-foundation-2026-token-costs.php/index.md)
- [AI Headshots vs ICAO 9303: Why FRVT Rejections Hit 15%](https://kahma.io/blog/ai-headshots-vs-icao-9303-why-frvt-rejections-hit-15.php/index.md)
- [2026 ISO 19794-5 LPI Metric: NIST Baseline & Adaptive Thresholds](https://kahma.io/blog/2026-iso-19794-5-lpi-metric-nist-baseline-adaptive-thresholds.php/index.md)
- [500 AI Headshots Tested: 61% Rejected by Face-Matching Engines](https://kahma.io/blog/500-ai-headshots-tested-61-rejected-by-face-matching-engines.php/index.md)
- [2026 ICAO Photo Audit: 900 of 1,200 AI Portraits Rejected](https://kahma.io/blog/2026-icao-photo-audit-900-of-1200-ai-portraits-rejected.php/index.md)
- [Do AI Headshots Pass LinkedIn? Inside a 30-Day Live Test](https://kahma.io/blog/do-ai-headshots-pass-linkedin-inside-a-30-day-live-test.php/index.md)
- [512px SDXL Headshots Pass USCIS APIGR: Translation Over Upscaling](https://kahma.io/blog/512px-sdxl-headshots-pass-uscis-apigr-translation-over-upscaling.php/index.md)
- [Python Beats R for Biometric Checks on Vertex AI: Latency & Cost](https://kahma.io/blog/python-beats-r-for-biometric-checks-on-vertex-ai-latency-cost.php/index.md)
- [ResNet-50 Inference: Python vs Keras 3 for ID Verification](https://kahma.io/blog/resnet-50-inference-python-vs-keras-3-for-id-verification.php/index.md)
- [2026 ICAO 9303: AI ID Photos Must Exceed 600x600 Pixels](https://kahma.io/blog/2026-icao-9303-ai-id-photos-must-exceed-600x600-pixels.php/index.md)
- [600x600 Passport Spec Breaks AI Headshots: 69% Retrain Threshold](https://kahma.io/blog/600x600-passport-spec-breaks-ai-headshots-69-retrain-threshold.php/index.md)
- [How AI Headshot Generators Are Reshaping Professional Branding](https://kahma.io/blog/how_ai_headshot_generators_are_reshaping_professional_branding.php/index.md)
- [How to Create Professional AI Headshots for LinkedIn](https://kahma.io/blog/how_to_create_professional_ai_headshots_for_linkedin.php/index.md)
- [AI Face Threshold: 0.85 and Choosing Your Headshot](https://kahma.io/blog/ai-face-threshold-085-and-choosing-your-headshot.php/index.md)

Canonical: https://kahma.io/blog/