uniqueidentifier

How do I generate a unique ID value that can be easily passed on via phone or email, that can be easily remembered while still not being easily guessable. I am using database. But as I am giving away the ID to people I do not want it to be bound to a database. I could do something with the unique ID I already have in database, but cannot use it directly, to avoid it being guessable. I am using Python and have tried using uuid , but uuid is too long to be human readable . Is there any way to create a human friendly pronounceable ID? What you want to do is stitch together syllables to create

I am trying to read information off of a smartcard, using a contact-less OmniKey 5321 card reader. Edit : Added a bounty. I'm writing a C# 3 in .NET 3.5 program, so this is a Windows application. The card has some information stamped onto it, that I would assume, in some way, is present in the card data (there is a photo of the card and reader below.) The card has the following information stamped onto it: 1* 00447 21091328-32 When using the Diagnostics application that comes with the OmniKey card reader, I get the following information: Smart Card Name: iCLASS 16KS UID:EE 74 0E 00 FB FF 12 E0

My Rails app needs to generate electronic coupons for users. Each coupon given should have a unique coupon code that can be redeemed on our system. For example a coupon for a free burrito. User A receives a coupon for a free burrito and then User B receives a coupon for a free burrito. The 2 coupons should have unique coupon codes. What is the best way to generate a code like this that is not easily forged? I don't want users to have a high success rate of typing in random numbers and redeeming other peoples coupons. I guess thinking about it like a gift card with a unique number on the back

I need a quick and easy way to store files with unique file names on iOS. I need to prefix the file with a string, and then append the generated unique identifier to the end. I was hoping NSFileManager had some convenient method to do this, but I can't seem to find it. I was looking at createFileAtPath:contents:attributes: , but am unsure if the attributes will give me that unique file name. Create your own file name: CFUUIDRef uuid = CFUUIDCreate(NULL); CFStringRef uuidString = CFUUIDCreateString(NULL, uuid); CFRelease(uuid); NSString *uniqueFileName = [NSString stringWithFormat:@"%@%@",

I have a directive that can be used multiple times on a page. In the template of this directive, I need to use IDs for an input-Element so I can "bind" a Label to it like so: <input type="checkbox" id="item1" /><label for="item1">open</label> Now the problem is, as soon as my directive is included multiple times, the ID "item1" is not unique anymore and the label doesn't work correctly (it should check/uncheck the checkbox when clicked). How is this problem fixed? Is there a way to assign a "namespace" or "prefix" for the template (like asp.net does with the ctl00...-Prefix)? Or do I have to