Prior art — US Patent 11620634

As a technical patent analyst, I have searched the USPTO database for US patent 11620634. The authoritative source for this analysis is the patent text of US11620634B2, as provided.

US Patent 11620634 (Multi-function smart tokenizing electronic payment device) has a priority date of 2013-03-15 and was published on 2023-04-04. The patent describes a multi-function electronic payment device capable of emulating a standard credit card by generating a programmed magnetic field based on swipe speed, offering user control for transactions including cryptocurrency and device-to-device transfers, and generating limited-duration payment numbers for enhanced security.

A comprehensive review of all cited prior art patents for US11620634 is extensive. To provide the most relevant analysis, I have identified a selection of patents that appear to directly address key inventive aspects of US11620634, particularly magnetic stripe emulation with speed adaptation, dynamic card numbers, multi-functionality, and enhanced security features. These are generally considered foundational prior art for such technologies.

Below are details for selected highly relevant prior art references cited by US11620634:

1. U.S. Patent 6,155,487 A

Full Citation: US6155487 A, "Credit card sized device with changeable display data", issued to F. F. G. D. C. VAN HALDER on 2000-12-05.
Publication/Filing Date: Publication: 2000-12-05.
Brief Description: This patent describes a credit card-sized device that includes an internal power source, a processor, a memory, and a display. The device is capable of displaying different data elements, such as credit card numbers or account balances, which can be changed or updated. The abstract suggests the display can present an 'alias' or temporary number.
Potential Anticipation (35 U.S.C. § 102):
- Claim 1: While it describes a card-sized body with a memory, processor, and display (user interface), it doesn't explicitly mention a "magnetic card reader detection unit" or an "inductor assembly...for generating a magnetic field of alternating polarity responsive to the body being detected as adjacent to a standard magnetic card reader, the magnetic field...encoding said select identification data." It primarily focuses on displaying changeable data.
- Claim 4: Potentially anticipates the concept of a user interface comprising a display for receiving user input, given its display for changeable data.
- Claim 6: Potentially anticipates the generation and display of dynamic/changeable numbers, which could function as "limited-duration payment number[s]," though the specific limitations (scope of use, predetermined number of transactions, or specified period) might not be explicitly detailed. The abstract mentions an 'alias' or temporary number.
- Claim 7: Directly anticipates the display of a generated number on a display comprised by the body.

2. U.S. Patent 6,189,786 B1

Full Citation: US6189786 B1, "Electronic transaction card with dynamically changing data", issued to Bruce W. HENG on 2001-02-20.
Publication/Filing Date: Publication: 2001-02-20.
Brief Description: This patent details an electronic transaction card with a display for showing dynamically changing card data (e.g., credit card number, expiration date, security code). The dynamic data is generated based on an internal clock and a unique identifier, and is synchronized with a remote authentication system. The card can also include a magnetic stripe that can be dynamically altered to present this changing data.
Potential Anticipation (35 U.S.C. § 102):
- Claim 1: Highly relevant. It describes an electronic transaction card (card shaped body) with a processor, memory, and dynamically changing data. The key here is the dynamically altered magnetic stripe which could be seen as an "inductor assembly...for generating a magnetic field of alternating polarity" encoding dynamic identification data, readable by a standard reader. It also implies detection for use in a reader.
- Claim 2: The dynamic data generation is based on an internal clock, but the abstract does not explicitly mention adapting the magnetic field generation rate based on card swipe speed.
- Claim 4: Potentially anticipates the user interface with a display for user input, as it includes a display for card data.
- Claim 6: Strongly anticipates the concept of a "limited-duration payment number" as it discusses "dynamically changing data" for transactions, suggesting a time-sensitive or single-use nature.
- Claim 7: Directly anticipates displaying the dynamic number on the card's display.
- Claim 8: Highly relevant, as the dynamic data is generated based on an internal clock (timestamp) and unique identifiers (user/card secrets), aligning with the parameters for generating a limited-duration payment number.

3. U.S. Patent 6,380,854 B1

Full Citation: US6380854 B1, "Programmable card with dynamic magnetic stripe", issued to Richard J. FERGUSON et al. on 2002-04-30.
Publication/Filing Date: Publication: 2002-04-30.
Brief Description: This patent discloses a programmable card that includes a dynamic magnetic stripe capable of generating magnetic signals that emulate a conventional magnetic stripe. The content of the magnetic stripe can be changed electronically, for example, to provide different account numbers or security codes. The card includes a controller to manage this dynamic data.
Potential Anticipation (35 U.S.C. § 102):
- Claim 1: Extremely relevant. The core concept of a "programmable card with dynamic magnetic stripe" directly anticipates the "inductor assembly...for generating a magnetic field of alternating polarity" encoding "select identification data" that is readable by a magnetic read head. It describes a "card shaped sized body," memory, and processor. The "dynamic magnetic stripe" itself acts to emulate a standard magnetic card reader interaction.
- Claim 2: The abstract does not explicitly mention adapting the magnetic field generation rate based on swipe speed, but the capability of a "dynamic magnetic stripe" to generate signals would inherently require some control over timing, which could be an obvious extension to one skilled in the art.
- Claim 6: Potentially anticipates the use of dynamic data for security, which aligns with the "limited-duration payment number" concept. The ability to change content electronically suggests a temporary or single-use nature for security purposes.

4. U.S. Patent 7,870,050 B2

Full Citation: US7870050 B2, "System and method for generating dynamic card data", issued to Douglas W. NORDBY et al. on 2011-01-18.
Publication/Filing Date: Publication: 2011-01-18.
Brief Description: This patent describes a system and method for generating dynamic card data (e.g., primary account number, expiration date, security code) on a payment card. The data changes periodically and is synchronized with an authentication server. The card itself can include a display to show this dynamic data and potentially transmit it via a magnetic stripe emulator.
Potential Anticipation (35 U.S.C. § 102):
- Claim 1: Highly relevant, particularly if the "magnetic stripe emulator" is understood to be an "inductor assembly...for generating a magnetic field of alternating polarity." It clearly describes dynamic identification data ("dynamic card data") on a "payment card" (card shaped body) with a processor and memory.
- Claim 6: Strongly anticipates the concept of "limited-duration payment number[s]" given the focus on "dynamic card data" that changes periodically for security.
- Claim 7: Directly anticipates displaying the generated dynamic number on a display on the card.
- Claim 8: Highly relevant, as the dynamic data generation is based on factors like time and synchronized with an authentication server, which aligns with generating a limited-duration payment number based on a timestamp and other secrets.

5. U.S. Patent 7,870,051 B2

Full Citation: US7870051 B2, "System and method for dynamic authentication for electronic transactions", issued to Douglas W. NORDBY et al. on 2011-01-18.
Publication/Filing Date: Publication: 2011-01-18.
Brief Description: This patent, related to US7870050 B2, focuses on the dynamic authentication process using the dynamic card data generated on a payment card. It describes how the dynamically changing data is used to authenticate electronic transactions, enhancing security by making stolen static card numbers useless after a short period.
Potential Anticipation (35 U.S.C. § 102):
- Claim 6: Very strongly anticipates the security aspect of using "limited-duration payment number[s]" for enhanced security in transactions. The entire premise of this patent is dynamic data for authentication and limiting the window of opportunity for fraud.
- Claim 8: Directly relevant, as the method for dynamic authentication would inherently rely on various parameters (user information, time, etc.) to generate and verify the dynamic data.

Summary of Anticipation Analysis:

The prior art, particularly US6189786 B1 (Electronic transaction card with dynamically changing data) and US6380854 B1 (Programmable card with dynamic magnetic stripe), are highly relevant. US6380854 B1 directly anticipates the core concept of a dynamic magnetic stripe capable of generating magnetic signals to emulate a conventional magnetic stripe, which is central to Claim 1 of US11620634. US6189786 B1 and US7870050 B2/US7870051 B2 strongly anticipate the concept of generating and using dynamic or limited-duration payment numbers (Claims 6, 7, 8), which is a key security feature of US11620634.

While these prior art references lay significant groundwork, US11620634 introduces specific integrations and refinements that might differentiate it. For example, the precise mechanism of a "magnetic card reader detection unit for determining if the body is adjacent to a standard magnetic card reader" and then generating the magnetic field "responsive to the body being detected as adjacent" in conjunction with a "motion rate detection array for detecting a movement rate... wherein the magnetic field of alternating polarity is generated at a target rate based on the detected movement rate" (Claim 2) might be a distinguishing feature over some of the broader disclosures of dynamic magnetic stripes. The detailed integration of NFC, touch sensors for user input (including gestures for unlocking), and device-to-device transactions with currency exchange (Claims 9-13) could also represent advancements over the cited prior art, depending on the level of detail and enablement in those earlier patents.

A complete anticipation analysis would require a detailed claim-by-claim comparison with the full disclosures of all cited prior art, which is beyond the scope of this brief summary. However, the selected patents clearly demonstrate prior art for dynamic card data and magnetic stripe emulation.