Hey Terminal vs Paytools

Your work machine, from your iPad. Your work computer can stay at home or in the office. Connect to it over SSH with Hey Terminal, open Codex or Claude Code there, and continue working on your project from your iPad. A keyboard-first terminal for iPad Use a physical keyboard to enter prompts and run commands. Review your project with your remote CLI, edit files with vim, or work in tmux when those tools are available on your computer. Keep different connections in separate tabs. Create a tab with Command-T, close it with Command-W, and switch with Command-1 through Command-9. Quick remote work on iPhone When your computer isn't with you, connect for a short command, check a project file, or send a follow-up request to your remote CLI. SSH and a local terminal Connect with an SSH command or a configured host alias. Authenticate with a password or SSH key. Use the local terminal for basic file commands and SSH key generation. Before you connect You need a computer or server with SSH enabled that you can reach from your device. Remote tools run on that machine, not inside Hey Terminal. Install and configure the tools you want to use there, with any required accounts. Your remote machine must be powered on and accessible. No app account or subscription required.

Paytools is an offline payment-engineering workbench for developers, QA engineers, integrators, students, and fintech teams. Decode and inspect common payment-message structures, explore field definitions, convert technical data, and keep essential payment references close at hand. Processing happens locally on your device, so pasted messages and imported files are not uploaded to a server. PAYMENT TOOLS • Inspect ISO 8583 MTIs, bitmaps, and present data elements • Decode and build primary and secondary bitmaps • Parse BER-TLV data and identify common EMV tags • Recognize SWIFT MT blocks and ISO 20022 XML messages • Convert between HEX, ASCII, decimal, binary, and packed BCD • Validate synthetic card numbers with the Luhn algorithm • Compose synthetic Track 2 and ISO-0 PIN-block test data • Use development utilities for XOR and DES odd parity KNOWLEDGE LIBRARY • Search all 128 ISO 8583 data elements • Learn ISO 8583:1987, 1993, and 2003 MTI concepts • Follow authorization from merchant to acquirer, scheme, and issuer • Understand STIP, advice, reversal, clearing, and settlement flows • Review ISO 20022 message families and validation concepts • Study EMV transaction and cryptogram terminology CODES AND FIELDS Search operational response-code references for common ISO profiles, Visa, Mastercard, UnionPay/UPI, 3-D Secure, and gateway HTTP outcomes. Open any ISO field for its purpose, format, and implementation notes, including an expanded guide to DE22 POS Entry Mode. PRIVATE BY DESIGN Paytools has no account requirement and no cloud processing. Use synthetic or appropriately masked test data. Production payment formats and code meanings can vary by network, region, product, and specification release. Paytools is an independent educational and development utility. It is not affiliated with or endorsed by any payment network. Formal certification and production processing require the current authorized specifications, test packs, approved cryptographic systems, and applicable security controls.