An app that shows me where my friends and family are. (Like Google Latitude used to do)
Find My Friends
Ask HN: Idea Sunday
461–470 of 589 posts
Re: Ask HN: Idea Sunday
#462Earlier quoted context omitted.
> A commercial version of PostgreSQL server that has row-level security and natively replicates with SQLIte over HTTP(S). Easy offline mobile apps. This, if done well, could be awesome. How you would effectively guarantee row-level security? One thing that I've been thinking about a lot is a database whose rows are only readable by the users that generated the data in those rows. Essentially, the data in each row is…
How would you combine that with indexing? Seems like data needs to be unencrypted to be indexed. And if you're not doing any indexing, isn't it as simple as converting the user's data to JSON, and encrypting the JSON?
Aye, there's the rub. Lots of nice features disappear when you're only storing encrypted data. I suspect that it's not possible to create an index of the data (before encrypting it) that doesn't leak information and thus ruin the encryption (but IANACryptologist).
It would really only be useful for data you're not joining on or searching over, and then you've got more of a dumb data store than a database.
Re: Ask HN: Idea Sunday
#463Earlier quoted context omitted.
I love how OneTab works, and it was something I used very frequently. But one day, not sure why exactly my chrome profile folder (osx mac) got corrupted. I cannot give technical details about it really, but not a single one of the chrome addons I had worked any longer. And I tried to recover the tab sessions but was unsuccessful. If there is a feature OneTab is missing, it's to sync your tabs/sessions to a certain lo…
It provides an export as a text file on the 'One Tab' page in the right hand corner. I wrote a small Python script to parse this text file and upload all my tabs to Pinboard.
care to share the script?
Re: Ask HN: Idea Sunday
#464Earlier quoted context omitted.
Taking a pic of your room and seeing nice furniture virtually added so you can easily test different styles.
In college, my senior project involved a 3d room designer using the Kinect and a laptop. You could position virtual 3d objects (couches, lamps, etc) in the room, and move the camera around to see how the virtualized items looked.
that sounds so freaking cool :D
Re: Ask HN: Idea Sunday
#465I'd like a way to skim through videos. Playing at 2x or 4x doesn't really do the trick. For contrast, if I'm skimming through an article, I can quickly scan for keywords, look for paragraph breaks & sentence breaks to get the gist of what a particular section of the text is describing. How can I skim a video the same way? I'm more interested in a solution for a 30 or 60 minute recorded lecture or conference keynote t…
For audio there is an app called Recordium ( recordiumapp.com ). It is a great tool for lecture noting and skimming the audio later. Someone should do the same for video.
Re: Ask HN: Idea Sunday
#466Hey how about "problem monday" then.
It is said that often times you should not start with an idea, but rather with a problem.
So maybe posting problems could lead to great ideas...
Re: Ask HN: Idea Sunday
#467Earlier quoted context omitted.
How would you combine that with indexing? Seems like data needs to be unencrypted to be indexed. And if you're not doing any indexing, isn't it as simple as converting the user's data to JSON, and encrypting the JSON?
Aye, there's the rub. Lots of nice features disappear when you're only storing encrypted data. I suspect that it's not possible to create an index of the data (before encrypting it) that doesn't leak information and thus ruin the encryption (but IANACryptologist). It would really only be useful for data you're not joining on or searching over, and then you've got more of a dumb data store than a database.
It might be useful if a database could enable encryption on specific columns (which would make those columns unindexable).
Re: Ask HN: Idea Sunday
#468A service for blind/partially sighted people where they can use a smart phone to connect to a service where volunteers (if any are connected) describe what they can see from the video streamed from the smart phone. The volunteers are given ratings afterwards, and their video streams checked against their descriptions by other volunteers. Monetized later via a paid service where the person is reliably connected to tra…
Have a look at bemyeyes.org it is just that its in public beta:
https://beta.bemyeyes.org
Re: Ask HN: Idea Sunday
#469A way for employees to push back against their coworkers when they email too much crap to too wide an audience. In other words, I wish my Inbox had a little voting widget next to each message: +------------------------------------+ | 4,376 people received this message | | | | [Cool, it was ] [It was a waste] | | [important and] [of my time to ] | | [worthy of our] [ read this ] | | [ time ] [ message ] | | | +-------…
:) reminds me of the "warning" message that used to appear in "rn" before you posted a message to a usenet group: This program posts news to thousands of machines throughout the entire civilized world. You message will cost the net hundreds if not thousands of dollars to send everywhere. Please be sure you know what you are doing. Ah the old days.....
>You message will cost the net hundreds if not thousands of dollars to send everywhere.
Was there a time when this was actually true?
Re: Ask HN: Idea Sunday
#470A package/dependency manager for C/C++. In my limited experience working with C/C++ projects, the most painful part was always getting the project to actually build (downloading all dependencies, figuring out how the Makefile works, etc.). In other words, a npm/brew for C/C++.
For anyone who wants to see how it can be built: CocoaPods does it for xcode and objc.