Touchpad

Lore & Background

In 1980, Xerox offered one of the first touchpads on a computer system with their Xerox 860, a word processing workstation aimed at medium- and large-sized businesses. Embedded on the Xerox 860's keyboard, to the right of the keys, was a circular touchpad dubbed the 'Cat' (short for capacitance-activated transducer), used as an alternative input method for selecting strings of text. By 1982, Apollo desktop computers were equipped with a touchpad on the right side of the keyboard. The first battery-powered clamshell laptop, the Gavilan SC (1983), included a touchpad mounted above its keyboard, rather than below, which became the norm.

Cirque introduced the first widely available touchpad, branded as GlidePoint, in 1994. Apple introduced touchpads with modern placing in the PowerBook 500 series that same year, using Cirque's GlidePoint technology, which Apple refers to as a 'trackpad'; it replaced the trackball of previous PowerBook models.

Since 2008, Apple's revisions of the MacBook and MacBook Pro incorporated a 'Tactile Touchpad' design with a button integrated into the tracking surface. As touchpads began to be introduced in laptops in the 1990s, no consistent term was used, and references varied among glidepoint, touch sensitive input device, touchpad, trackpad, and pointing device. Since the early 2000s, touchpads have become the dominant laptop pointing device, displacing the pointing stick.

Position Within the Pointing Device Family

Touchpads occupy a distinct niche within Logitech's pointing device lineup, standing as their own subcategory rather than being folded into the broader mouse family. The company's product taxonomy separates touchpads from ball mice, optical mice, gaming mice, trackballs, cordless presenters, 3D controllers, and a catch-all grouping for other pointing devices. This deliberate categorization acknowledges that a touchpad represents a fundamentally different interaction paradigm compared to a tracked ball or an optical sensor following a surface.

Where a trackball requires the user to rotate a sphere and a gaming mouse demands precise wrist movement over a pad, a touchpad invites the user to glide fingers directly across a flat surface. By listing touchpads as a parallel category rather than a sub-type of mouse, Logitech signals that these devices serve different ergonomic and workflow needs. The placement within the pointing devices section, positioned above keyboards, game controllers, and webcams in the catalog, reinforces that touchpads are primarily cursor-control tools, distinct from the broader input and peripheral ecosystem the company maintains across its product range.

Software and Platform Integration

Logitech's touchpads, like its other pointing devices, are supported by a layered software ecosystem that has evolved across operating system generations. The company's software portfolio ranges from the older MouseWare and SetPoint utilities to more recent offerings such as Logitech Control Center, which targets macOS versions 10.8 through 11.0, and Logitech Options, designed for Windows 7 and later or macOS 10.8 and later. For users on newer systems, Logitech Options+ requires Windows 10 or macOS 10.15 at minimum, while the gaming-focused Logitech G Hub supports Windows 7 onward and macOS 10.13 and above.

At the cutting edge sits the Logi AI Prompt Builder, demanding Windows 10 or macOS 12. This tiered approach means a touchpad user's software experience depends heavily on their operating system version. The existence of both a dedicated Gaming Software track and a general-purpose Options track suggests Logitech differentiates its driver and configuration layers based on whether the pointing device is aimed at productivity or competitive play, a distinction that would apply to touchpads positioned in either context.

Reader's Guide

Touchpads operate primarily through capacitive sensing, which senses the change of capacitance where a finger touches the pad; they will not sense the tip of a pencil or other ungrounded or non-conducting implements, and fingers insulated by a glove may also be problematic. Like touchscreens, touchpads sense absolute position but their resolution is limited by their size; for common use as a pointer device, the dragging motion of a finger is translated into a finer, relative motion of the cursor. Hardware buttons equivalent to a standard mouse's left and right buttons are sometimes positioned adjacent to the touchpad, though some touchpads (called clickpads) rely on software buttons, with the whole pad forming a button that the driver interprets as left or right depending on finger placement.

Touchpad drivers may interpret tapping as a mouse click, and a tap followed by a continuous pointing motion can indicate dragging. Tactile touchpads allow clicking and dragging by incorporating button functionality into the surface itself. Many touchpads use two-finger dragging for scrolling, and some have 'hotspots' for functions such as scrolling or launching applications.

Laptops today feature multitouch touchpads that can sense up to five fingers simultaneously, providing gestures for zoom, rotate, and context menus. Touchpads have also been used in personal digital assistants, portable media players (such as iPod Classic with its click wheel), and some smartphones (including optical trackpads). On September 9, 2024, Apple unveiled the iPhone 16 series featuring a single one-dimensional trackpad next to the side button called 'Camera Control' for taking photos and videos, with a force sensor and capacitance touch sensor for adjusting zoom, exposure, or depth-of-field.