Skip to Content

Every Memory in Place

A new Web service jogs a user’s memory at the right time and place.
March 25, 2009

Tie a string around your finger. Write a message on a Post-it note. Leave yourself a voice mail. For centuries, people have come up with ingenious ways to aid their memories. But it’s still all too easy to forget. A startup called ReQall, based in Moffett Field, CA, today launches a service designed to jog users’ memories depending on what they’re doing at any given moment.

In the moment: ReQall jogs users’ memory with the location information gathered by an iPhone or Blackberry.

ReQall already offers a free service that can be accessed using a phone. By calling a toll-free number, users can record a memo, reminder, or appointment, and voice-recognition software will analyze each message, turning it into the appropriate kind of note. The service issues timely reminders via IM or e-mail and a daily summary of appointments. Users can also access and modify their memos online.

A new version of the software called ReQall Pro, which launches today, focuses on issuing reminders in the right place at the right time. ReQall Pro works with iPhones and Blackberrys, using the location information collected by these devices, as well as information gleaned from the contents of each memo, to work out when (and where) to jog a user’s memory. “We believe that computers can help with everyday memory problems and help with organizing,” says Sunil Vemuri, cofounder of ReQall.

ReQall Pro’s “memory jogger” software determines how to issue reminders to users. It performs keyword analysis on memos that a user enters in an effort to link together relevant information. For example, if a meeting with John Doe is approaching, ReQall will present the user with other stored items related to John Doe. A user will also automatically receive reminders when he arrives at certain locations, for example, receiving a grocery list when he reaches the grocery store. Vemuri explains that the system also tries to avoid overloading the user by paying attention to how many notes a user has stored and optimizing the number of reminders issued. It will also adjust to a user’s behavior, issuing a limited number of reminders at locations that a user visits frequently.

Forget me not: ReQall’s memory-assistance service provides a variety of reminders, some of which are shown above. Memory boosts, for example, remind a user about something that the system thinks she may have forgotten. Other reminders are tied to specific times and places.

Vemuri got the idea for ReQall after doing research for his PhD, which involved recording everything about his life for several years. “I would not advise doing that anymore,” he jokes. “There’s too much bathwater and too few babies in there.” Since then, he has focused instead on helping users store important information more easily, and figuring out how best to filter it.

Michael King, a research director at Gartner specializing in wireless technology, says that he’s impressed by ReQall’s focus on context. “There’s nothing that I’ve really seen out there that takes a bunch of these different aspects of context and melds it into a single application,” King says. He adds that, while ReQall’s service is impressive, assistants of this type will be most useful when they can go even further. For example, instead of reminding a user to purchase tickets, the application might handle the purchase itself.

In addition to the memory jogger technology, ReQall Pro includes integration with Outlook and Google Calendar. The Pro service costs $2.99 a month, or $24.99 a year. Existing users will be able to purchase the service at a discounted rate. ReQall Standard will continue as a free service, but may include advertising in the future.

Keep Reading

Most Popular

DeepMind’s cofounder: Generative AI is just a phase. What’s next is interactive AI.

“This is a profound moment in the history of technology,” says Mustafa Suleyman.

What to know about this autumn’s covid vaccines

New variants will pose a challenge, but early signs suggest the shots will still boost antibody responses.

Human-plus-AI solutions mitigate security threats

With the right human oversight, emerging technologies like artificial intelligence can help keep business and customer data secure

Next slide, please: A brief history of the corporate presentation

From million-dollar slide shows to Steve Jobs’s introduction of the iPhone, a bit of show business never hurt plain old business.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at with a list of newsletters you’d like to receive.