---
key: mechanic/phone-touch--family-11
type: mechanic
id: phone-touch--family-11
lang: en
title: Contact restrictions
summary: >-
The rule requires contacts to stay in specific places. In Bounden two players
keep thumbs at opposite screen ends while following the device’s path.
updatedAt: '2026-10-22'
status: active
url: 'https://gamemechanics.pro/en/knowledge/mechanic/phone-touch--family-11/'
jsonUrl: >-
https://gamemechanics.pro/api/v1/knowledge/en/mechanic/phone-touch--family-11.json
markdownUrl: >-
https://gamemechanics.pro/content/knowledge/en/mechanic/phone-touch--family-11.md
aliases: []
tags:
- Phone touchscreen interactions
- Mechanics catalog
sourceIds:
- source-629f2c2eea7fbe60
sources:
- id: source-629f2c2eea7fbe60
title: Bounden
url: 'https://apps.apple.com/us/app/bounden/id850456491?uo=4'
verifiedAt: null
relations: []
placements:
- catalogId: phone-touch
id: family-11
title: Phone touchscreen interactions
url: 'https://gamemechanics.pro/en/mechanics/phone-touch/#family-11'
categoryIds:
- section-1
supersededBy: []
attributes:
preview:
updatedAt: '2026-10-22'
title: Contact restrictions
description: >-
The rule requires contacts to stay in specific places. In Bounden two
players keep thumbs at opposite screen ends while following the device’s
path.
image:
src: images/mechanics/input-bounden-0.webp
width: 720
height: 1280
crop:
x: 0
'y': 0
width: 720
height: 1110
game: Bounden
sourceUrl: 'https://apps.apple.com/us/app/bounden/id850456491?uo=4'
originalUrl: >-
https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/63/97/6e/63976ed5-f550-de02-5746-9347662485dd/3135f553-ed89-497f-ac8c-6dce738a7dbf_1.png/720x1560bb.jpg
credit: Adriaan de Jongh
rights: >-
Imagery © Adriaan de Jongh. Developer-distributed screenshot or frame;
all rights reserved. Excluded from MIT and CC BY 4.0.
caption: 'Bounden: the developer’s diagram of holding opposite screen ends'
alt: 'Bounden: the developer’s diagram of holding opposite screen ends'
markers:
- x: 50
'y': 49
label: Both players retain contact while moving the shared phone
tips:
- >-
Explain the allowed contact count and handle accidental release
gracefully.
examples:
- title: Bounden
url: 'https://apps.apple.com/us/app/bounden/id850456491?uo=4'
endsAt: null
provenance: >-
Original editorial design catalog consolidated from project discussions on
2026-10-20. Complete discussion item lists and contextual limitations are
preserved; linked primary sources support specific techniques, not the entire
classification. English translation was prepared with machine assistance and
editorial review.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/phone-touch
---
# Contact restrictions
id: phone-touch--family-11
type: mechanic
key: mechanic/phone-touch--family-11
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/phone-touch--family-11/
The rule requires contacts to stay in specific places. In Bounden two players keep thumbs at opposite screen ends while following the device’s path.
## At a glance
[Bounden](https://apps.apple.com/us/app/bounden/id850456491?uo=4) · Imagery © Adriaan de Jongh. Developer-distributed screenshot or frame; all rights reserved. Excluded from MIT and CC BY 4.0.
1. Both players retain contact while moving the shared phone
- Explain the allowed contact count and handle accidental release gracefully.
- [Bounden](https://apps.apple.com/us/app/bounden/id850456491?uo=4)
## How it works
A rule limits the number, arrangement, continuity, or order of contacts allowed.
## Variants
### Variants and applications
- Fixed hold. Type: Touch. Fingers: 1+. Rule: The finger must remain within a small tolerance. Application: Balance the tool, stabilize the reactor, do not disturb the sleeping character.
- Moving area tracking. Type: Touch. Fingers: 1+. Rule: You need to maintain contact with a moving target. Application: Hold a grip, follow a beam, guide a diagnostic sensor.
- Forbidden areas. Type: Touch. Fingers: 1+. Rule: Touching certain areas violates the condition. Application: Labyrinth with electric walls, disarming a trap, precision operation.
- Breakaway to evade. Type: Touch. Fingers: 1+. Rule: Lack of contact temporarily protects the object or disables its influence. Application: Remove a vulnerable marker finger, skip an obstacle, open a dangerous circuit.
- Waiting without touching. Type: Touch. Fingers: 1+. Rule: Reward or progress appears only after a pause without input. Application: Calm the creature, wait for the image to appear, solve the patience puzzle.
- Touch budget. Type: Touch. Fingers: 1+. Rule: The solution is given a limited number of contacts or the total holding time. Application: Minimize clicks, save device energy, solve a problem with one gesture.
- Order of installation and removal. Type: multi. Fingers: 2+. Rule: Not only the positions are significant, but also the order in which contacts begin and end. Application: Open a multi-finger lock, remove the locks in a safe order.
- Limit speed and smoothness. Type: Touch. Fingers: 1+. Rule: Too fast movements, stops or jerks violate the condition. Application: Carry explosives, guide a pen, perform fine assembly.
## Context and limits
Author's working classification for designing games and interactions. Options can overlap and combine; the list is not a generally accepted standard or proven exhaustive list. Application examples are conditional unless a specific verifiable observation is indicated nearby. Sources support individual techniques and technical limitations.
## Connected materials
## Sources and provenance
Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review.
- [Bounden](https://apps.apple.com/us/app/bounden/id850456491?uo=4) (id: source-629f2c2eea7fbe60)
CC-BY-4.0 · gamemechanics.pro contributors