You know the problem: an item fails during its warranty period - express or implied - but you can't find the receipt or other proof of purchase, so the retailer won't help you.
Or maybe you're scrupulous about filing warranty-related documents, but it's a chore having to cull the collection so there's room for more, because you can't simply throw out the oldest as warranty periods vary.
And there's the near-universal use of thermal paper for receipts, which isn't the most stable medium.
A tagging system lets you organise documents into whatever categories suit you, and records can be exported as CSV files by type, category or tag.
Receipts can also be marked as tax related, in which case they can be easily exported at the end of the tax year, and the images are retained indefinitely.
The information may be useful for insurance purposes in the event of fire, theft or other losses.
Other suggested applications include tracking the expiry dates of insurance policies (the automatic reminders give you time to shop around before renewing), passports, licences and permits.
Three plans are available.
The free service allows up to 10 active records, limits uploaded images to 5MB each, and doesn't allow sub-accounts or have the custom warning, tax, export or reporting features.
The individual plan ($5 a month or $30 a year) permits 100 active records, allows custom warnings (eg, you might want at least seven months notice that your passport needs renewing) and data exports.
The top tier is the business plan ($50 a month or $300 a year), with 300 active records, 10MB per uploaded image, and access to all features of the service.
Keepr has been in beta since April, but is now in full production mode.
An iOS app for use with the service is scheduled for release in December.