This app was mentioned in 5 comments, with an average of 1.40 upvotes
Sure! For your first question, Visit the Play Data page and look at the field saying DDR-CODE.
For adding rivals... First, visit the Rivals page. Select any available rival slot and click the "未登録" link (not registered) to begin finding other players. You can look them up by either, in order, their DDR CODE, their player name, or by the most recent players who visited the last arcade you've logged in at.
So you're now on their profile – just click "ライバル登録" (rival registration). After you registered them as your rival, you can set them as your active rival to compare high scores against by clicking "ACTIVE登録" (active registration). You'll be golden from there. You can only compare against three rivals' scores at once, so switch and play around!
Now that you have a BASIC course subscription, you can consider importing all of your scores into a mobile app like Score Manager DDR A:
iOS: https://itunes.apple.com/us/app/ddr-score-manager-a/id1100126073?mt=8
Android: https://play.google.com/store/apps/details?id=jp.linanfine.dsma&hl=en_US
From there, you can also export your scores and compare against other players with Skill Attack. It's really cool!
Nooo prob~! Bummer on the eamuse cards, but yeah all of the Round 1 locations around L.A./Irvine tend to be more on-the-ball with them. (Round 1 alone is totally worth the trip, that place is straight up magical.)
As for practicing, absolutely yes! Probably the first option people go with is Stepmania (of course) where you can turn on assist clicks/claps and change the playback speed of the charts.
The official simfile packs on Zenius are very current and well maintained. Most returning tracks in Ace are from DDR 2013/2014, X1/2/3 and SN1/2. The new DDRA simfiles are sort of tricky to find but here's the link.
There is also a DDRA skin, which isn't perfect but really is quite nice! There are skins for older mixes too, which makes home practice feel more arcade-y.
There is also a somewhat less well-known feature in the simfile section - if you go to a pack, bring up the list of songs, and click one of the difficulty ratings, it will actually render out the full step chart in your browser:
Here's where to click, look for the little highlighted square.
Here's what the result looks like!
For another option that is quick and easy, there are also tons of Youtube videos of step charts recorded in Stepmania, here's one example. You can generally find these by searching for things like "DDR Songname ESP" (Expert Single Play) or "DDR Songname CDP" (Challenge Doubles Play) or whatever. There are also these dope Miku videos for figuring out foot placement on tough songs.
And there are a few more benefits to eamuse - there's are minigames you play to unlock songs, plus there's a new system of collecting lamps and heat levels to get guaranteed extra stages and access to certain "event songs" that Konami puts out every few months. It also saves all of your mods/options between plays which is super handy. And MOST importantly, it lets you pick your background dancer haha.
Plus if you reaaaally want to nerd out, you can buy Paseli and add a "basic subscription" your account which (among other things) allows third party apps to access your data, so you can use apps like this to track and sort your scores.
e-amusement passes are cards which let you create and login to your e-amusement account while playing KONAMI arcade games. If you touch one on the e-amusement pass reader on a KONAMI arcade machine connected to the online e-amusement network, then the machine will prompt you to create an account, or to login to your existing account using your 4-digit PIN.
Using an account will allow you to save your scores, settings, and unlocked content.
Also, if you have an e-amusement account, you can create a KONAMI ID online on KONAMI's website and link it to your arcade e-amusement account. If you do this, you can change some special settings online, such as adding "fast/slow" indicators on your note judgment or dimming the background to make the arrows easier to read.
Note that changing some of these special settings requires a subscription to KONAMI's "Basic Course" subscription plan. It costs 330 yen/month ($2.30 USD/month at today's exchange rate). This subscription gives you access to these special settings, as well as access to view lots of stats for your e-amusement account, such as all your personal best scores for songs and a list of your most recently played songs. Though if you wish to only change your online settings, you may cancel the subscription immediately after you've changed your settings and your settings will persist, thus only incurring a one-time payment of 330 yen.
If you do choose to keep your Basic Course subscription, you can use third-party applications to track your scores better. DDR Score Manager, Skill Attack, and Sanbai Ice Cream are all score managers which allow you to better view and keep track of your personal DDR scores, and require a Basic Course subscription in order to access your e-amusement account scores (full disclosure: I am the developer for Sanbai Ice Cream).
For instructions on how to set up your e-amusement account, your online KONAMI ID, or your Basic Course subscription, you can follow this step-by-step tutorial I made to guide you through any or all of these processes.
Finally, it used to be the case that e-amusement passes only worked with KONAMI arcade games. If you wanted to create an account for a Bandai-Namco arcade game (such as Taiko no Tatsujin), you had to buy a Bana Passport, and if you wanted to play a Sega arcade game (such as Chunithm), you would need an aime card.
However, these companies have since collaborated and unified their systems. Modern arcade pass cards will now be "Amusement IC" compatible -- if your card has this red and white symbol on the front or back, then you can use it on any arcade game which is on the Amusement network, which includes KONAMI games, Bandai-Namco games, and Sega games.
You make a great point there. I don't believe they had this statement last year too – so we do take a risk in switching back.
As for your question, check out these links here!
Registering a Japanese eA account and attaching your card
Adding Paseli to enable your Basic Course Subscription
One of the most common methods to adding Paseli overseas is to purchase a BitCash card online and redeem the code when adding Paseli. You'll need either Japanese IME or an on-screen Hirgana keyboard to input the characters on the BitCash card. People have used OffGamers and SEA Gamer Mall in the past to purchase online BitCash codes, though I believe SEAGM has changed their PayPal policies as of late.
​
Another cool feature with Basic subscription is that you can track your scores online using an app like DDR A Score Manager (iOS) and Skill Attack. They're really good for tracking rivals worldwide and making your own goals to beat too. :)