The phrase "a user id" is correct and usable in written English.
It can be used when referring to a unique identifier assigned to a user, typically in the context of computer systems or online platforms.
Example: "To access your account, please enter a user id and password."
Alternatives: "a user identifier" or "a user account ID".
Everyone on Facebook has a user ID number, created when they joined.
Some versions can keep even closer track of individuals, giving each one a user ID, according to the report of the Center for Democracy and Technology.
"Press reports have exaggerated the implications of sharing" a user ID, Mike Vernal, a Facebook engineer, wrote on a company blog for application developers.
When people subsequently log in, they would have to provide a user ID and password, and verify their identity by entering a code sent to related stored phone number.
Worse, the credit card information used to pay for the full delete is also stored (the full card number is not kept, however), and the transaction is linked through a user ID to the deleted account.
Facebook's acknowledgment came in response to an article in The Wall Street Journal that said several popular applications were passing a piece of data known as a user ID to outside companies, in violation of Facebook's privacy policy.
"With a keyword and a user-ID you can target services more accurately," he added.
In this process, a new idea is proposed where the user can select a user-id (UID) and password.
Next, the user needs to select a user-id (UID) and password and also need to pick a random secrete key 'k'k
In our protocol, a new idea is proposed where a user is allowed to select a user-id (UID) and password, not decided by the bank server, so that the user can memorize his/her UID and password easily.
Table 3 Representation of a community structure Community-ID List of members community-ID1 {user-ID a ; user-ID b ; … ; user-ID c } community-ID2 {user-ID i ; user-ID j ; … ; user-ID k } ⋯ community-ID N {user-ID x ; user-ID y ; … ; user-ID z }.
