# Building a Self Custodial Debit Card & Smart Permissions Alejandro Perezpaya Jorge Izquierdo Tuyo

- Channel: [Ethereum Denver](https://streameth.org/ethereum-denver)
- Date: 2025-10-09
- Duration: 18:13
- Topics: ETHDenver, Crypto, Web3, Blockchain, Event, Conference, ETHDenver 2025, ETHDenver 2024, Bitcoin, Ethereum
- Watch: https://streameth.org/watch/yt-BgZ8P8O9txU
- YouTube: https://www.youtube.com/watch?v=BgZ8P8O9txU

## Description

Learn how to build a completely a self-custodial debit card on top of smart accounts with rule-based spending. This talk delves into the technical architecture, challenges of building smart permissions, and innovations driving the next generation of decentralized financial tools.