The phrase "function as a reminder" is correct and usable in written English.
You can use it when describing something that serves the purpose of reminding someone of something.
Example: "The calendar app is designed to function as a reminder for important events and deadlines."
Alternatives: "serve as a reminder" or "act as a reminder."
All together, they function as a reminder that certain buildings have a very specific architectural language — meant to communicate sturdiness and monumentality in the case of these old banks — and when buildings are repurposed, this language loses its meaning.
While ostensibly innocuous and designed to strengthen the ongoing alliance between Washington and Seoul, the drills also function as a reminder to the region the U.S. still has more than 28,500 military personnel stationed in South Korea.
It can also function as a reminder of the mortality of humankind, as an expression of cultural values and roles, and help to propitiate the spirits of the dead, maintaining their benevolence and preventing their unwelcome intrusion into the affairs of the living.
"The imagery loosely functioned as a reminder to avoid excess in order to achieve salvation," Mr. Hinton writes.
The gentle tapping of a triangle at the introduction functions as a reminder to wake up, calling to mind Buddhist chimes.
Both programmes functioned as a reminder that people – especially when arranged into corporate form – will do as much as they can get away with up to and beyond the limits of the law, unless those laws are rigorously enforced by governments and institutions with a genuine interest in serving the public rather than big business.
"the total-concept-and-feel locution functions as a reminder that, while the infringement analysis must begin by dissecting the copyrighted work into its component parts in order to clarify precisely what is not original, infringement analysis is not simply a matter of ascertaining similarity between components viewed in isolation...
The disseminated alert message functions as a reminder on the possibility of a tsunami generated by the earthquake that has been felt by the public already at the time the tsunami warning message has been issued.
My favorite Uncle Martyism was his emphatic "Quote me if I'm wrong," which always seemed absurdly hilarious but now also functions as a reminder of the attention-getting lies of Palin and so many other talk show blowhards, politicians and corporate flacks.
Recognition is then based on the spatial location, whereas the spoken word functions as a reminder of which cue is mapped to a certain direction.
In cancer, breathlessness signalled the (possible) presence of cancer, and functioned as a reminder of patients' mortality despite the hopes they put in surgery, therapies and new drugs.
