Touch Knot

"I forgot my business cards," "I've run out of cards"—no more worries like that.

Touch Knot is a digital business card app that lets you share your profile using only your Android smartphone, without needing any physical business cards. Simply hold your NFC-enabled smartphone over the recipient's device. In an instant, your link collection page will open in their browser.

■ Recommended for:
* Those who often run out of business cards or find carrying them around inconvenient.
* Those who want to share their SNS, portfolio, and website all at once.
* Those who want to connect efficiently at events, meetups, and conferences.
* Those who want to reduce the cost and environmental impact of reissuing physical cards.
* Those looking for a digital business card that doesn't require physical card issuance.

■ Main Features
▼ URL Sharing via NFC Touch
Using HCE (Host Card Emulation) technology, your Android smartphone acts as an NFC tag. Simply touching the recipient's device (iPhone/Android) will open your personalized profile page URL. No dedicated cards or external devices are required.

▼ No App Installation Required for the Recipient
The recipient does not need to install Touch Knot at all. If they have an NFC-enabled smartphone (iPhone/Android), the profile page will open in their standard browser the moment they touch it. This eliminates the awkwardness of asking them to install an app.

▼ Easily Editable Profile Link Hub
Consolidate your social media (Xbox/Instagram/GitHub/LinkedIn, etc.), homepage, portfolio, and contacts into a single URL. You can update it anytime using the in-app editor, and the distribution URL remains the same, ensuring that everyone you've exchanged links with always receives the latest information.

▼ Distribution ON/OFF Switching
Switch distribution ON/OFF with a single tap from the quick settings tile. Enabling NFC distribution only when needed minimizes battery impact.

▼ Lightweight and Fast
Edge caching distribution ensures the page opens instantly on the recipient's device. We prioritized the quick response time of the touch.

▼ Sign In with Google Account
Setup is simple with just one Google account. Create an account securely and smoothly.

■ How to Use
1. Install the app and sign in with your Google account.
2. Edit your display name, social media links, etc.
3. Confirm that "Streaming" is displayed on the home screen.
4. Touch the back of your smartphone to the other person's smartphone.
5. Your profile page will automatically open in the other person's browser.

■ Freedom from Physical Cards
Paper business cards are convenient, but they have these drawbacks:
• Running out of them/forgetting about them
• ​​Information cannot be updated until reprinted if it becomes outdated
• Cannot include rich information such as social media links or video portfolios
• Printing and disposal costs and environmental impact

Touch Knot solves all of these problems with just one smartphone. By updating your information, everyone who has touched you in the past will always receive the latest version of you.

■ Privacy and Security
• Only the URL of your publicly set Link Hub page will be distributed.
• Contact information and device details will never be sent without your permission.
• Distribution ON/OFF is always under your control.
• Profile data is stored on a secure cloud infrastructure.

■ Required Environment (App Installation Device)
• Android 7.0 (API 24) or later
• NFC-enabled device
• Internet connection (for profile editing and initial setup)

* Once the distribution content is saved, NFC distribution itself will work offline.
* Reception is possible on all NFC-readable devices, including iOS.

■ About Development
Touch Knot aims to make digital business cards more accessible by eliminating the step of "issuing a card."

A business card without a physical card, in your pocket.