Platform Overview.

Youhere is an attendance and group check-in platform designed by a physics professor to eliminate the friction, inaccuracy, and fraud of traditional check-in methods.

Traditional attendance relies on paper sign-in sheets (which get passed around or signed for absent peers), calling roll (which consumes valuable presentation or lecture time), or static QR codes (which can easily be photographed, texted, and scanned from miles away). Youhere replaces all of these with fast, cryptographic location verification directly from attendees' personal smartphones.

Youhere operates on a two-tier model: an administrative web portal for group leaders and a lightweight, zero-account mobile app for participants.

• Host Setup (Web Portal): The organizer creates an account at Youhere.org, defines an event with a custom code (e.g., physics-101 or staff-meeting), pins the required venue location and radius on an interactive map, and optionally sets allowable date and time windows.
• Participant Experience (Mobile App): Attendees install the free Youhere app on iOS or Android with zero accounts, passwords, or personal profiles needed. When physically present at the venue, they enter the event code and tap "Check me in". The app verifies their presence against the defined boundaries and confirms attendance instantly.
• Attendance Logs & Reports: Organizers view live rosters in real time and can export complete attendance histories directly into CSV / Excel spreadsheets for storage or import into school SIS and LMS gradebooks.

Youhere supports two distinct boundary verification technologies to match different venue architectures:

• GPS / Location-Aware (Standard): Uses the smartphone's built-in location sensors. Ideal for outdoor settings, standalone lecture halls, athletic fields, and low-density venues.
• Bluetooth Low Energy (BLE) Beacons (Precision Indoor): Verifies micro-proximity to a dedicated physical Bluetooth beacon. Ideal for multi-story buildings, dense concrete or steel structures, and room-to-room discrimination where satellite GPS signals can degrade or reflect.

Privacy is built into the fundamental architecture of Youhere, not added as an afterthought:

• No Location Tracking: The service evaluates boundary presence strictly for a fraction of a second at the moment of check-in. Coordinates are evaluated in memory and never recorded or stored on our servers.
• Core Privacy (Roster Anonymization): For strict privacy environments, hosts can scramble attendee rosters into irreversible hashes or pseudonyms (hashed last names, random 5-letter names, or full random substitutions). Attendees see their private hash on their phone's "Who am I?" screen, meaning real student identities are never stored on the cloud server (compliant with FERPA, GDPR, and CIPA).

Beyond standard presence logging, Youhere includes built-in engagement and administration tools:

• In-App Voting & Polling: Group leaders can push live multiple-choice or short-answer questions to verified attendees for instant classroom feedback or participation credit.
• In-App Exams: Multiple-choice answer bubble sheets can be pushed directly to attendee devices for instant, automated grading.
• Venue Diagnostics: Built-in diagnostic tools allow organizers to test location accuracy and beacon signal reception before an event begins.

Youhere is built for groups of all sizes across education, enterprise, and community organizations:

• Typical Audiences: University lectures, K-12 classrooms, corporate workshops, medical training rounds & CME accreditation, marching bands, and athletic teams.
• For Participants: 100% free with no ads, no trackers, and no accounts required.
• For Hosts: 14-day full-feature free trial, followed by transparent subscription or per-use options (Weekly at $19.99, Monthly at $39.99, Annual at $99.99, or Pay-per-checkin credits at 0.025¢).