The way it works is simple
Step 1: Download the app: Play Store and iOS
Step 2: Find and visit nearest Cali-Mex Cash Point
Step 3: Trade HKD cash for HKD stablecoin
From the Bitspark mobile app, you can then exchange your HKD stablecoins for any of the other cryptocurrencies available such as Bitcoin, Ethereum, BitShares, Zeph or even other stablecoins pegged to currencies such as USD, SGD, GBP, AUD, CNY, PHP and EUR.
https://www.bitspark.io/blog-posts/cali-mex-cash-point-in-tsim-sha-tsui-buy-bitcoin-with-cash