Device Overview
This chapter provides an overview of the P400/P400 Plus/P400 Dual MSR device:
The P400/P400 Plus/P400 Dual MSR is Verifone's next-generation integrated retail PINpad device. Its touchscreen functionality and sophisticated design is perfect for high-end retail establishments.
The P400/P400 Plus/P400 Dual MSR is a consumer-facing handheld device. It can also be fix-mounted in some integrated retail scenarios. The product's design is equally appealing as a handheld PINpad and robust enough to look and function appropriately in a fixed mount setting.

Front Functions
The P400/P400 Plus/P400 Dual MSR includes the following features:
Capacitive touch LCD (Liquid Crystal Display).
Secure keypad supporting 3x5 matrix containing 0-9, *, #, Cancel, Backspace/Clear, and Enter keys.
Supports telco-style format.
Dual-function Backspace/Clear key.
Customer-entry for Cancel and Enter keys.
Following table lists the functions of Cancel, Enter and Clear/Backspace keys:
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Cancel key is used to exit and return to the main menu.
In the System mode login screen, a special menu can be accessed by pressing the Cancel key.
Cancel key is also used to power OFF. Press Cancel key for 3 sec to power OFF the terminal.
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Clear key is commonly used to delete a number, letter, or symbol on the PINpad's display screen.
Press Clear key one time to delete the last character typed on a line.
To delete additional characters, moving from right-to-left, press Clear key once for each character or hold down Clear key to delete all characters in a line.
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Enter key is generally used in the same way as the Enter key on a PC, that is, to end a procedure, confirm a value or entry, answer "Yes" to a query, or select a displayed option.
Enter key is used to power ON the terminal. Press Enter key for 3 sec to power ON the terminal.
Enter key is also used to restart the terminal. Press Enter key for 10 sec to restart the terminal.
Back Functions
The rear of the P400/P400 Plus/P400 Dual MSR device shows the following:
Cable connector compartment.
Threaded grommets for attaching the mounting plate.
uSD and dual-stack MSAM (Multiple Secure Access Module) connectors built into the back of the unit to support stored-value card programs or other merchant card requirements.
Features and Benefits
Ease of Use
Sleek and stylish shape occupies minimal counter space.
Bold, ergonomic design fits comfortably in the palm of a hand.
Large, hard-rubber keys provide improved tactile feedback, minimizing errors and maximizing ease-of-use for consumers of all ages.
Intuitive telco-style interface and colored control keys simplify training and reduce support requests.
320 (RGB) x 480 TFT (HVGA) display with a capacitive touch panel.
Rugged and reliable design.
Connects with most POS (Point-of-Sale) payment terminals.
Supports payment transactions in a variety of payment environments.
Critical Security Protection
Offers a choice of Master/Session or DUKPT (Derived Unique Key Per Transaction Method as defined in the VISA's POS Equipment Requirement: PIN processing and Data Authentication, International Version 1.0, August 1988) key-management methods to protect PIN-based transactions.
Offers secure, reliable PIN (Personal Identification Number) input for expanding range of PIN-based transactions.
PCI (Payment Card Industry)-compliant for secure solutions, meeting the PED (PIN Entry Device) standard.
Meets ISO and ANSI (American National Standards Institute) standards for PIN encryption, key management, and MAC.
Key injection simplified and secured with Verifone's SecureKit key loading software.
Rugged and reliable design absorbs hard knocks found at point-of-sale counters.
Removable privacy shield offers option of supplemental physical security.
Connects with most POS payment terminals, PCs, and ECRs (Electronic Cash Register).
USB (Universal Serial Bus) connectivity that gives another option to connect with payment terminals, personal computers, and electronic cash registers (ECRs).
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