Huduma Namba is simply digital data with citizens as the Data Subjects and government as the Data Controller and its related partners/agencies/3rd parties/etc as Data Processors.
In short, a good Data Protection Act would be sufficient to cover digital ID issues and concerns given that the government would be expected to observe and respect data protection principles with regard to Citizen digital IDs. 
These principles include but not limited to:

a) Fairness and lawfulness 

b) Restriction to a specific purpose 

c) Transparency 

d) Data minimization 

e) Storage Limitation 

f) Factual accuracy; up-to-date data 

g) Confidentiality and data security

h) Accountability 

On Wednesday, July 31, 2019, 08:34:53 PM GMT+3, Grace Githaiga via kictanet <kictanet@lists.kictanet.or.ke> wrote:

Has anyone come across any document that outlines what a good digital id law should look like? 

Here is Kenya\’s Huduma Bill 2019.  http://www.hudumanamba.go.ke/wp-content/uploads/2019/07/12-07-2019-The-Huduma-Bill-2019-2-1.pdf
There will an open public forum for public participation tomorrow (Wednesday) organized by the Ministry of Interior starting 9.00 am to 1.00 pm at the Kenya School of Government, Lower Kabete Campus, off Lower Kabete Road. 

Best regards

Grace Githaiga