On 1 October 2019, the National Immigration Administration launched the “Platform of Identity Authentication on Entry-exit Certificates”, to facilitate Hong Kong residents accessing public services as convenient as Mainland residents. Highlights are as follows:

1. Hong Kong residents with a valid entry-exit certificate (e.g. Home Return Permit) could enjoy 35 kinds of public services on the e-platform, e.g. transportation, finance, communication, etc.; and
2. private companies, which have made an application to the National Immigration Administration, could assist overseas Hong Kong residents to access public services through the e-platform.

For details, please see:
“Mainland to Ease Service Procedures for Overseas Chinese Nationals”
https://www.nia.gov.cn/n741440/n741547/c1159317/content.html

“Measures for the Administration of Identity Authentication on Entry-exit Certificates (for Trial Implementation)” (Chinese Version Only)
https://www.nia.gov.cn/n741440/n741547/c1159317/content.html