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Build for Good
Eldercare

LetterKey

26 August 2025

LetterKey is a platform that helps seniors easily understand official letters by scanning and translating them into bite-sized summaries and audio, in their preferred language.

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The Problem

Government documents like HDB and CPF letters are often written in complex English yet research shows that Singaporean seniors aged 55-65 have literacy skills below average, with the gap widening as they age. 7 in 10 seniors at the Senja Fei Yue Active Ageing Centre (AAC) need help in letter-reading assistance and follow-ups, overloading the social support system.

Our Solution

Introducing LetterKey, a senior-friendly platform that simplifies complex information by clearly explaining what seniors need to know and what actions they should take.

LetterKey is available as a physical kiosk and WhatsApp chatbot, so seniors can access it at any time and anywhere.

Understanding any document in 3 simple steps:

  • Choose your language : Select the language you're most comfortable with

  • Add your document : Scan or upload any document you need help understanding

  • Get your summary : Read the clear summary, listen to audio playback, or share it directly to WhatsApp for later reference

User interview at Senja Feiyue AAC
Impact

LetterKey partnered with People’s Association and Fei Yue Community Services to launch pilots at Bukit Panjang CC and Senja AAC.

During this pilot phase, LetterKey has successfully:

  • Launched kiosk and WhatsApp bot services at Bukit Panjang CC and Senja AAC

  • Achieved 150 total pilot users and processed more than 300 documents

  • 25% retention rate on WhatsApp bot with some seniors came back to use LetterKey more than 5 times in the same week  

  • Processed 13 types of documents including government letters, SMS messages, insurance documents, utility bills, and even medical documents 

  • Translated documents in 4 main languages - English, Mandarin, Malay and Tamil; and 2 dialects - Hokkien and Cantonese

Pilot Findings & Feedback

LetterKey x Seniors

We conducted user interviews at Bukit Panjang Community Centre during our pilot to validate our assumptions. One key finding: users unanimously preferred the mobile format over the kiosk due to convenience and accessibility. However, this preference may reflect the profiles of seniors at Community Centre, as these users typically have higher quality of life and tech literacy compared to Active Ageing Centre visitors.

LetterKey x AAC Staff

Our interview with a manager at Senja Fei Yue Active Ageing Centre revealed an important insight. While LetterKey successfully helps seniors "understand confidently" by translating and summarizing documents, there is a significant demand for the next level of support - helping seniors "act independently" by guiding them through follow-up steps. The manager noted that follow-up actions are the most time-consuming part of their letter assistance workflow, as seniors often struggle to complete these independently and require staff intervention.

Roadmap

Our focus for the next 6 months:

  • Develop LetterKey v2 with agentic AI to guide seniors through follow-up actions after document understanding

  • Expand user base to more diverse demographics including transnational and blue-collar families with lower literacy

  • Partner with IMDA Digital Ambassadors to integrate LetterKey into their support programs

  • Secure grants and funding for continued development

  • Share our build-for-good journey to inspire young builders and innovators in Singapore.

Try our product here!: https://letterkey.sg

For more details, email us: hello@letterkey.sg

Thumbnail for LetterKey Demo
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